公开(公告)号：US20050059541A1

公开(公告)日：2005-03-17

申请号：US10493222

申请日：2002-11-06

申请人： Kiyoshi Hirao ,  Shuji Sakaguchi ,  Yukihiko Yamauchi ,  Shuzo Kanzaki ,  Suzuya Yamada

发明人： Kiyoshi Hirao ,  Shuji Sakaguchi ,  Yukihiko Yamauchi ,  Shuzo Kanzaki ,  Suzuya Yamada

IPC分类号： C04B35/563 ,  C04B35/58

CPC分类号： C04B35/645 ,  B82Y30/00 ,  C04B35/563 ,  C04B35/64 ,  C04B2235/3231 ,  C04B2235/3232 ,  C04B2235/3813 ,  C04B2235/3821 ,  C04B2235/422 ,  C04B2235/424 ,  C04B2235/528 ,  C04B2235/5409 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/5454 ,  C04B2235/604 ,  C04B2235/656 ,  C04B2235/6562 ,  C04B2235/658 ,  C04B2235/6581 ,  C04B2235/661 ,  C04B2235/77 ,  C04B2235/786 ,  C04B2235/80 ,  C04B2235/94 ,  C04B2235/96

摘要： A boron carbide based sintered body having a four-point flexural strength of at least 400 MPa and a fracture toughness of at least 2.8 MPa·m1/2, which has the following two preferred embodiments. (1) A boron carbide-titanium diboride sintered body obtained by sintering a mixed powder of a B4C powder, a TiO2 powder and a C powder while reacting them under a pressurized condition and comprising from 95 to 70 mol % of boron carbide and from 5 to 30 mol % of titanium diboride, wherein the boron carbide has a maximum particle diameter of at most 5 μm. (2) A boron carbide-chromium diboride sintered body containing from 10 to 25 mol % of CrB2 in B4C, wherein the sintered body has a relative density of at least 90%, boron carbide particles in the sintered body have a maximum particle diameter of at most 100 μm, and the abundance ratio (area ratio) of boron carbide particles of from 10 to 100 μm to boron carbide particles having a particle diameter of at most 5 μm, is from 0.02 to 0.6.

摘要翻译： 具有至少400MPa的四点弯曲强度和至少2.8MPa.m 1/2的断裂韧性的碳化硼基烧结体，其具有以下两个优选实施方案。 （1）一种碳化硼 - 二硼化钛烧结体，其通过在加压条件下使B4C粉末，TiO2粉末和C粉末的混合粉末烧结并且包含95-70mol％的碳化硼和5 至30mol％的二硼化钛，其中所述碳化硼的最大粒径为至多5μm。 （2）一种碳化硼 - 二硼化铬烧结体，其在B4C中含有10〜25摩尔％的CrB 2，其中，烧结体的相对密度为90％以上，烧结体中的碳化硼粒子的最大粒径为 至多100微米，并且具有10至100微米的碳化硼颗粒与粒径至多为5微米的碳化硼颗粒的丰度比（面积比）为0.02至0.6。

公开(公告)号：US20070135292A1

公开(公告)日：2007-06-14

申请号：US11618020

申请日：2006-12-29

申请人： Kiyoshi HIRAO ,  Shuji Sakaguchi ,  Yukihiko Yamauchi ,  Shuzo Kanzaki ,  Suzuya Yamada

发明人： Kiyoshi HIRAO ,  Shuji Sakaguchi ,  Yukihiko Yamauchi ,  Shuzo Kanzaki ,  Suzuya Yamada

IPC分类号： C04B35/563

CPC分类号： C04B35/645 ,  B82Y30/00 ,  C04B35/563 ,  C04B35/64 ,  C04B2235/3231 ,  C04B2235/3232 ,  C04B2235/3813 ,  C04B2235/3821 ,  C04B2235/422 ,  C04B2235/424 ,  C04B2235/528 ,  C04B2235/5409 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/5454 ,  C04B2235/604 ,  C04B2235/656 ,  C04B2235/6562 ,  C04B2235/658 ,  C04B2235/6581 ,  C04B2235/661 ,  C04B2235/77 ,  C04B2235/786 ,  C04B2235/80 ,  C04B2235/94 ,  C04B2235/96

摘要： A boron carbide based sintered body having a four-point flexural strength of at least 400 MPa and a fracture toughness of at least 2.8 MPa·m1/2, which has the following two preferred embodiments. (1) A boron carbide-titanium diboride sintered body obtained by sintering a mixed powder of a B4C powder, a TiO2 powder and a C powder while reacting them under a pressurized condition and comprising from 95 to 70 mol % of boron carbide and from 5 to 30 mol % of titanium diboride, wherein the boron carbide has a maximum particle diameter of at most 5 μm. (2) A boron carbide-chromium diboride sintered body containing from 10 to 25 mol % of CrB2 in B4C, wherein the sintered body has a relative density of at least 90%, boron carbide particles in the sintered body have a maximum particle diameter of at most 100 μm, and the abundance ratio (area ratio) of boron carbide particles of from 10 to 100 μm to boron carbide particles having a particle diameter of at most 5 μm, is from 0.02 to 0.6.

摘要翻译： 具有至少400MPa的四点弯曲强度和至少2.8MPa.m 1/2的断裂韧性的碳化硼基烧结体，其具有以下两个优选实施方案。 （1）一种碳化硼 - 二硼化钛烧结体，其通过将B 4 S粉末，TiO 2粉末和C粉末的混合粉末烧结而得到，同时使它们在 加压条件为95〜70摩尔％的碳化硼和5〜30摩尔％的二硼化钛，其中，碳化硼的最大粒径为5μm以下。 （2）在B 4 C中含有10〜25摩尔％的CrB 2 N 2的碳化硼 - 二硼化铬烧结体，其中，所述烧结体的相对密度为 至少90％的烧结体中的碳化硼粒子的最大粒径为100μm以下，碳化硼粒子为10〜100μm的丰度比（面积比）与粒径为 最多5颗，从0.02到0.6。

公开(公告)号：US07442661B2

公开(公告)日：2008-10-28

申请号：US11618020

申请日：2006-12-29

申请人： Kiyoshi Hirao ,  Shuji Sakaguchi ,  Yukihiko Yamauchi ,  Shuzo Kanzaki ,  Suzuya Yamada

发明人： Kiyoshi Hirao ,  Shuji Sakaguchi ,  Yukihiko Yamauchi ,  Shuzo Kanzaki ,  Suzuya Yamada

IPC分类号： C04B35/563 ,  C04B35/58

CPC分类号： C04B35/645 ,  B82Y30/00 ,  C04B35/563 ,  C04B35/64 ,  C04B2235/3231 ,  C04B2235/3232 ,  C04B2235/3813 ,  C04B2235/3821 ,  C04B2235/422 ,  C04B2235/424 ,  C04B2235/528 ,  C04B2235/5409 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/5454 ,  C04B2235/604 ,  C04B2235/656 ,  C04B2235/6562 ,  C04B2235/658 ,  C04B2235/6581 ,  C04B2235/661 ,  C04B2235/77 ,  C04B2235/786 ,  C04B2235/80 ,  C04B2235/94 ,  C04B2235/96

摘要： A boron carbide based sintered body having a four-point flexural strength of at least 400 MPa and a fracture toughness of at least 2.8 MPa·m1/2, which has the following two preferred embodiments. (1) A boron carbide-titanium diboride sintered body obtained by sintering a mixed powder of a B4C powder, a TiO2 powder and a C powder while reacting them under a pressurized condition and comprising from 95 to 70 mol % of boron carbide and from 5 to 30 mol % of titanium diboride, wherein the boron carbide has a maximum particle diameter of at most 5 μm. (2) A boron carbide-chromium diboride sintered body containing from 10 to 25 mol % of CrB2 in B4C, wherein the sintered body has a relative density of at least 90%, boron carbide particles in the sintered body have a maximum particle diameter of at most 100 μm, and the abundance ratio (area ratio) of boron carbide particles of from 10 to 100 μm to boron carbide particles having a particle diameter of at most 5 μm, is from 0.02 to 0.6.

摘要翻译： 具有至少400MPa的四点弯曲强度和至少2.8MPa.m 1/2的断裂韧性的碳化硼基烧结体，其具有以下两个优选实施方案。 （1）一种碳化硼 - 二硼化钛烧结体，其通过将B 4 S粉末，TiO 2粉末和C粉末的混合粉末烧结而得到，同时使它们在 加压条件为95〜70摩尔％的碳化硼和5〜30摩尔％的二硼化钛，其中，碳化硼的最大粒径为5μm以下。 （2）在B 4 C中含有10〜25摩尔％的CrB 2 N 2的碳化硼 - 二硼化铬烧结体，其中，所述烧结体的相对密度为 至少90％的烧结体中的碳化硼粒子的最大粒径为100μm以下，碳化硼粒子为10〜100μm的丰度比（面积比）与粒径为 最多5颗，从0.02到0.6。

公开(公告)号：US20060247120A1

公开(公告)日：2006-11-02

申请号：US11477433

申请日：2006-06-30

申请人： Kiyoshi Hirao ,  Shuji Sakaguchi ,  Yukihiko Yamauchi ,  Shuzo Kanzaki ,  Suzuya Yamada

发明人： Kiyoshi Hirao ,  Shuji Sakaguchi ,  Yukihiko Yamauchi ,  Shuzo Kanzaki ,  Suzuya Yamada

IPC分类号： C04B35/563

CPC分类号： C04B35/645 ,  B82Y30/00 ,  C04B35/563 ,  C04B35/64 ,  C04B2235/3231 ,  C04B2235/3232 ,  C04B2235/3813 ,  C04B2235/3821 ,  C04B2235/422 ,  C04B2235/424 ,  C04B2235/528 ,  C04B2235/5409 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/5454 ,  C04B2235/604 ,  C04B2235/656 ,  C04B2235/6562 ,  C04B2235/658 ,  C04B2235/6581 ,  C04B2235/661 ,  C04B2235/77 ,  C04B2235/786 ,  C04B2235/80 ,  C04B2235/94 ,  C04B2235/96

摘要： A boron carbide based sintered body having a four-point flexural strength of at least 400 MPa and a fracture toughness of at least 2.8 MPa·m1/2, which has the following two preferred embodiments. (1) A boron carbide-titanium diboride sintered body obtained by sintering a mixed powder of a B4C powder, a TiO2 powder and a C powder while reacting them under a pressurized condition and comprising from 95 to 70 mol % of boron carbide and from 5 to 30 mol % of titanium diboride, wherein the boron carbide has a maximum particle diameter of at most 5 μm. (2) A boron carbide-chromium diboride sintered body containing from 10 to 25 mol % of CrB2 in B4C, wherein the sintered body has a relative density of at least 90%, boron carbide particles in the sintered body have a maximum particle diameter of at most 100 μm, and the abundance ratio (area ratio) of boron carbide particles of from 10 to 100 μm to boron carbide particles having a particle diameter of at most 5 μm, is from 0.02 to 0.6.

摘要翻译： 具有至少400MPa的四点弯曲强度和至少2.8MPa.m 1/2的断裂韧性的碳化硼基烧结体，其具有以下两个优选实施方案。 （1）一种碳化硼 - 二硼化钛烧结体，其通过将B 4 S粉末，TiO 2粉末和C粉末的混合粉末烧结而得到，同时使它们在 加压条件为95〜70摩尔％的碳化硼和5〜30摩尔％的二硼化钛，其中，碳化硼的最大粒径为5μm以下。 （2）在B 4 C中含有10〜25摩尔％的CrB 2 N 2的碳化硼 - 二硼化铬烧结体，其中，所述烧结体的相对密度为 至少90％的烧结体中的碳化硼粒子的最大粒径为100μm以下，碳化硼粒子为10〜100μm的丰度比（面积比）与粒径为 最多5颗，从0.02到0.6。

公开(公告)号：US07417002B2

公开(公告)日：2008-08-26

申请号：US11927024

申请日：2007-10-29

申请人： Kiyoshi Hirao ,  Shuji Sakaguchi ,  Yukihiko Yamauchi ,  Shuzo Kanzaki ,  Suzuya Yamada

发明人： Kiyoshi Hirao ,  Shuji Sakaguchi ,  Yukihiko Yamauchi ,  Shuzo Kanzaki ,  Suzuya Yamada

IPC分类号： C04B35/563 ,  C04B35/58

CPC分类号： C04B35/645 ,  B82Y30/00 ,  C04B35/563 ,  C04B35/64 ,  C04B2235/3231 ,  C04B2235/3232 ,  C04B2235/3813 ,  C04B2235/3821 ,  C04B2235/422 ,  C04B2235/424 ,  C04B2235/528 ,  C04B2235/5409 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/5454 ,  C04B2235/604 ,  C04B2235/656 ,  C04B2235/6562 ,  C04B2235/658 ,  C04B2235/6581 ,  C04B2235/661 ,  C04B2235/77 ,  C04B2235/786 ,  C04B2235/80 ,  C04B2235/94 ,  C04B2235/96

摘要： A boron carbide based sintered body having a four-point flexural strength of at least 400 MPa and a fracture toughness of at least 2.8 MPa·m1/2, which has the following two preferred embodiments. (1) A boron carbide-titanium diboride sintered body obtained by sintering a mixed powder of a B4C powder, a TiO2 powder and a C powder while reacting them under a pressurized condition and comprising from 95 to 70 mol % of boron carbide and from 5 to 30 mol % of titanium diboride, wherein the boron carbide has a maximum particle diameter of at most 5 μm. (2) A boron carbide-chromium diboride sintered body containing from 10 to 25 mol % of CrB2 in B4C, wherein the sintered body has a relative density of at least 90%, boron carbide particles in the sintered body have a maximum particle diameter of at most 100 μm, and the abundance ratio (area ratio) of boron carbide particles of from 10 to 100 μm to boron carbide particles having a particle diameter of at most 5 μm, is from 0.02 to 0.6.

公开(公告)号：US20080063583A1

公开(公告)日：2008-03-13

申请号：US11927024

申请日：2007-10-29

申请人： Kiyoshi Hirao ,  Shuji Sakaguchi ,  Yukihiko Yamauchi ,  Shuzo Kanzaki ,  Suzuya Yamada

发明人： Kiyoshi Hirao ,  Shuji Sakaguchi ,  Yukihiko Yamauchi ,  Shuzo Kanzaki ,  Suzuya Yamada

IPC分类号： C01B31/36

CPC分类号： C04B35/645 ,  B82Y30/00 ,  C04B35/563 ,  C04B35/64 ,  C04B2235/3231 ,  C04B2235/3232 ,  C04B2235/3813 ,  C04B2235/3821 ,  C04B2235/422 ,  C04B2235/424 ,  C04B2235/528 ,  C04B2235/5409 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/5454 ,  C04B2235/604 ,  C04B2235/656 ,  C04B2235/6562 ,  C04B2235/658 ,  C04B2235/6581 ,  C04B2235/661 ,  C04B2235/77 ,  C04B2235/786 ,  C04B2235/80 ,  C04B2235/94 ,  C04B2235/96

摘要： A boron carbide based sintered body having a four-point flexural strength of at least 400 MPa and a fracture toughness of at least 2.8 MPa·m1/2, which has the following two preferred embodiments. (1) A boron carbide-titanium diboride sintered body obtained by sintering a mixed powder of a B4C powder, a TiO2 powder and a C powder while reacting them under a pressurized condition and comprising from 95 to 70 mol % of boron carbide and from 5 to 30 mol % of titanium diboride, wherein the boron carbide has a maximum particle diameter of at most 5 μm. (2) A boron carbide-chromium diboride sintered body containing from 10 to 25 mol % of CrB2 in B4C, wherein the sintered body has a relative density of at least 90%, boron carbide particles in the sintered body have a maximum particle diameter of at most 100 μm, and the abundance ratio (area ratio) of boron carbide particles of from 10 to 100 μm to boron carbide particles having a particle diameter of at most 5 μm, is from 0.02 to 0.6.

摘要翻译： 具有至少400MPa的四点弯曲强度和至少2.8MPa.m 1/2的断裂韧性的碳化硼基烧结体，其具有以下两个优选实施方案。 （1）一种碳化硼 - 二硼化钛烧结体，其通过将B 4 S粉末，TiO 2粉末和C粉末的混合粉末烧结而得到，同时使它们在 加压条件为95〜70摩尔％的碳化硼和5〜30摩尔％的二硼化钛，其中，碳化硼的最大粒径为5μm以下。 （2）在B 4 C中含有10〜25摩尔％的CrB 2 N 2的碳化硼 - 二硼化铬烧结体，其中，所述烧结体的相对密度为 至少90％的烧结体中的碳化硼粒子的最大粒径为100μm以下，碳化硼粒子为10〜100μm的丰度比（面积比）与粒径为 最多5颗，从0.02到0.6。

公开(公告)号：US20060057292A1

公开(公告)日：2006-03-16

申请号：US10540873

申请日：2003-12-22

申请人： Noriya Izu ,  Woosuck Shin ,  Ichiro Matsubara ,  Norimitsu Murayama ,  Yukihiko Yamauchi ,  Shuzo Kanzaki

发明人： Noriya Izu ,  Woosuck Shin ,  Ichiro Matsubara ,  Norimitsu Murayama ,  Yukihiko Yamauchi ,  Shuzo Kanzaki

IPC分类号： B05D3/02 ,  C08J7/04

CPC分类号： G01N27/125

摘要： The present invention provides a method of manufacturing a porous thick film of an oxide that has extremely few cracks and can be satisfactorily used as an oxygen partial pressure detecting part of an oxygen sensor. The present invention relates to a method of manufacturing such a porous thick film as an oxygen partial pressure detecting part of a resistive oxygen sensor comprising taking a fine particle powder of an oxide containing cerium oxide as a raw material powder, preparing a paste containing the oxide, printing the paste onto a substrate by screen printing, calcining and sintering, the method comprising a step of carrying out heat treatment to effect particle growth from the average particle diameter of the raw material powder to a particle diameter less than the average particle diameter of the ultimately obtained thick film, a step of mixing the particle growth-effected powder with a solvent, a step of dispersing agglomerated particles in the solvent, a step of removing a precipitate, a step of evaporating off the solvent, and a step of mixing the resulting oxide with an organic binder to obtain the paste.

摘要翻译： 本发明提供一种制造氧化物的多孔厚膜的方法，其具有极少的裂纹，可以令人满意地用作氧传感器的氧分压检测部。 本发明涉及一种电阻式氧传感器的氧分压检测部分的多孔厚膜的制造方法，其特征在于，将含有氧化铈的氧化物的微粒粉末作为原料粉末，制备含有氧化物 通过丝网印刷，煅烧和烧结将糊料印刷在基材上，该方法包括进行热处理以使颗粒生长从原料粉末的平均粒径到小于平均粒径的粒径的步骤 最终获得的厚膜，将颗粒生长粉末与溶剂混合的步骤，将附聚颗粒分散在溶剂中的步骤，除去沉淀物的步骤，蒸发溶剂的步骤和混合步骤 得到的氧化物与有机粘合剂得到糊状物。

公开(公告)号：US5447894A

公开(公告)日：1995-09-05

申请号：US354123

申请日：1994-12-06

申请人： Masaki Yasuoka ,  Kiyoshi Hirao ,  Shuzo Kanzaki

发明人： Masaki Yasuoka ,  Kiyoshi Hirao ,  Shuzo Kanzaki

IPC分类号： C04B35/10 ,  C04B35/117

CPC分类号： C04B35/62675 ,  C04B35/117 ,  C04B2235/3222 ,  C04B2235/3227 ,  C04B2235/3418 ,  C04B2235/5445 ,  C04B2235/6027 ,  C04B2235/606 ,  C04B2235/656 ,  C04B2235/6567 ,  C04B2235/77 ,  C04B2235/78 ,  C04B2235/80 ,  C04B2235/95 ,  C04B2235/96

摘要： A sintered ceramic article formed mainly of alumina, having a chemical composition of from 1 to 10% by weight of La.sub.2 O.sub.3, from 0.01 to 0.1% by weight of SiO.sub.2, and the balance of Al.sub.2 O.sub.3 and containing these components in the form of corundum (.alpha.-Al.sub.2 O.sub.3) and lanthanum .beta.-alumina (La.sub.2 O.sub.3.llAl.sub.2 O.sub.3) and a method for the production of a sintered ceramic article formed mainly of alumina, comprising the steps of shaping a mixture of Al.sub.2 O.sub.3, La.sub.2 O.sub.3, and SiO.sub.2, calcining the shaped mixture in the air at a temperature in the range of from 600.degree. C. to 1000.degree. C., and further firing the calcined shaped mixture to a temperature in the range of from 1400.degree. C. to 1800.degree. C.

摘要翻译： 主要由氧化铝形成的烧结陶瓷制品，其化学组成为1至10重量％的La 2 O 3，0.01至0.1重量％的SiO 2，余量的Al 2 O 3并含有刚玉形式的这些组分（α -Al 2 O 3）和镧β-氧化铝（La 2 O 3·AlAl 2 O 3）和主要由氧化铝形成的烧结陶瓷制品的制造方法，包括以下步骤：将Al 2 O 3，La 2 O 3和SiO 2的混合物成型， 空气在600℃至1000℃的温度范围内进一步煅烧，并将焙烧成型的混合物进一步焙烧至1400℃至1800℃的温度。

公开(公告)号：US5705449A

公开(公告)日：1998-01-06

申请号：US761206

申请日：1996-12-06

申请人： Kiyoshi Hirao ,  Manuel E. Brito ,  Shuzo Kanzaki

发明人： Kiyoshi Hirao ,  Manuel E. Brito ,  Shuzo Kanzaki

IPC分类号： C30B1/02 ,  C04B35/584 ,  C04B35/593 ,  C04B35/626 ,  C30B29/62 ,  C04B35/587

CPC分类号： C04B35/5935

摘要： A method for the production of a high-strength high-toughness silicon nitride sinter includes the steps of mixing a silicon nitride powder with a sintering additive, adding to the resultant mixture as seed particles 0.1 to 10% by volume, based on the amount of the mixture, of elongated single crystal .beta.-silicon nitride particles having a larger minor diameter than the average particle diameter of the silicon nitride powder and having an aspect ratio of at least 2, forming the resultant mixture so as to orient the elongated single crystal .beta.-silicon nitride particles as seed particles in a specific direction, and heating the green body to density it and simultaneously induce epitaxial growth of single crystal .beta.-silicon nitride particles, and a high-strength, high-toughness silicon nitride sinter obtained by the method.

摘要翻译： 制造高强度高韧性氮化硅烧结体的方法包括以下步骤：将氮化硅粉末与烧结添加剂混合，将所得混合物作为0.1〜10体积％的种子颗粒，以 该混合物具有比氮化硅粉末的平均粒径小的直径比至少为2的长径比的细长的单晶β-氮化硅颗粒，形成所得混合物以便使细长单晶β - 氮化硅颗粒作为特定方向的种子颗粒，并且加热生坯以使其密度并同时诱导单晶β-氮化硅颗粒的外延生长，以及通过该方法获得的高强度，高韧性氮化硅烧结体 。

公开(公告)号：US5674793A

公开(公告)日：1997-10-07

申请号：US529854

申请日：1995-09-18

申请人： Kiyoshi Hirao ,  Manuel E. Brito ,  Shuzo Kanzaki

发明人： Kiyoshi Hirao ,  Manuel E. Brito ,  Shuzo Kanzaki

IPC分类号： C30B1/02 ,  C04B35/584 ,  C04B35/593 ,  C04B35/626 ,  C30B29/62 ,  C04B35/587

CPC分类号： C04B35/5935

摘要： A method for the production of a high-strength high-toughness silicon nitride sinter includes the steps of mixing a silicon nitride powder with a sintering additive, adding to the resultant mixture as seed particles 0.1 to 10% by volume, based on the amount of the mixture, of elongated single crystal .beta.-silicon nitride particles having a larger minor diameter than the average particle diameter of the silicon nitride powder and having an aspect ratio of at least 2, forming the resultant mixture so as to orient the elongated single crystal .beta.-silicon nitride particles as seed particles in a specific direction, and heating the green body to density it and simultaneously induce epitaxial growth of single crystal .beta.-silicon nitride particles, and a high-strength, high-toughness silicon nitride sinter obtained by the method.

摘要翻译： 制造高强度高韧性氮化硅烧结体的方法包括以下步骤：将氮化硅粉末与烧结添加剂混合，将所得混合物作为0.1〜10体积％的种子颗粒，以 该混合物具有比氮化硅粉末的平均粒径小的直径比至少为2的长径比的细长的单晶β-氮化硅颗粒，形成所得混合物以便使细长单晶β - 氮化硅颗粒作为特定方向的种子颗粒，并且加热生坯以使其密度并同时诱导单晶β-氮化硅颗粒的外延生长，以及通过该方法获得的高强度，高韧性氮化硅烧结体 。