公开(公告)号：US5888269A

公开(公告)日：1999-03-30

申请号：US819212

申请日：1997-03-17

申请人： Yasuhiro Yamada ,  Hirohisa Miura ,  Mamoru Okamoto ,  Takashi Matsufuji ,  Taro Tatsumi ,  Kazuo Fujii

发明人： Yasuhiro Yamada ,  Hirohisa Miura ,  Mamoru Okamoto ,  Takashi Matsufuji ,  Taro Tatsumi ,  Kazuo Fujii

IPC分类号： C23C12/02 ,  C23C8/48

CPC分类号： C23C12/02

摘要： A case nitrided aluminum product is produced by contacting an aluminum product with a nitriding agent at a part of a surface thereof at least, and by nitriding the aluminum product at the surface with an ambient gas at a temperature of a melting point of the aluminum product or less while keeping the aforementioned contact. The nitriding agent includes an aluminum powder, and the ambient gas virtually includes a nitrogen gas. The resulting nitriding layer has a depth of 5 micrometers or more, and it exhibits a case hardness of from 250 to 1,200 mHv. Thus, it is possible to form the deep and hard nitriding layer on the aluminum product with ease under the conditions where it has been said to be too difficult to nitride aluminum products. The case nitrided aluminum product can appropriately make sliding parts which require high wear resistance.

摘要翻译： 一种氮化铝产品是通过至少在一部分表面上使铝制品与氮化剂接触而制造的，并且通过在铝制品的熔点温度下将表面上的铝产品用环境气体氮化 或更少，同时保持上述接触。 氮化剂包括铝粉末，并且环境气体实际上包括氮气。 得到的氮化层的深度为5微米以上，壳状硬度为250〜1200mHv。 因此，在被认为太难以氮化铝制品的条件下，可以容易地在铝制品上形成深层和硬质氮化层。 氮化铝制品可以适当地制造需要高耐磨性的滑动部件。

公开(公告)号：US5514225A

公开(公告)日：1996-05-07

申请号：US317525

申请日：1994-10-04

申请人： Yasuhiro Yamada ,  Hirohisa Miura ,  Mamoru Okamoto ,  Takashi Matsufuji ,  Taro Tatsumi ,  Kazuo Fujii

发明人： Yasuhiro Yamada ,  Hirohisa Miura ,  Mamoru Okamoto ,  Takashi Matsufuji ,  Taro Tatsumi ,  Kazuo Fujii

IPC分类号： C23C8/02 ,  C23C8/24 ,  C23C8/60

CPC分类号： C23C8/60

摘要： A case nitrided aluminum product is produced by contacting an aluminum product with a nitriding agent at a part of a surface thereof at least, and by nitriding the aluminum product at the surface with an ambient gas at a temperature of a melting point of the aluminum product or less while keeping the aforementioned contact. The nitriding agent includes an aluminum powder, and the ambient gas virtually includes a nitrogen gas. The resulting nitriding layer has a depth of 5 micrometers or more, and it exhibits a case hardness of from 250 to 1,200 mHv. Thus, it is possible to form the deep and hard nitriding layer on the aluminum product with ease under the conditions where it has been said to be too difficult to nitride aluminum products. The case nitrided aluminum product can appropriately make sliding parts which require high wear resistance.

公开(公告)号：US5582655A

公开(公告)日：1996-12-10

申请号：US471752

申请日：1995-06-06

申请人： Yasuhiro Yamada ,  Hirohisa Miura ,  Mamoru Okamoto ,  Takashi Matsufuji ,  Taro Tatsumi ,  Kazuo Fujii

发明人： Yasuhiro Yamada ,  Hirohisa Miura ,  Mamoru Okamoto ,  Takashi Matsufuji ,  Taro Tatsumi ,  Kazuo Fujii

IPC分类号： C23C8/02 ,  C23C8/24 ,  C23C8/60

CPC分类号： C23C8/60

摘要： A case nitrided aluminum product is produced by contacting an aluminum product with a nitriding agent at a part of a surface thereof at least, and by nitriding the aluminum product at the surface with an ambient gas at a temperature of a melting point of the aluminum product or less while keeping the aforementioned contact. The nitriding agent includes an aluminum powder, and the ambient gas virtually includes a nitrogen gas. The resulting nitriding layer has a depth of 5 micrometers or more, and it exhibits a case hardness of from 250 to 1,200 mHv. Thus, it is possible to form the deep and hard nitriding layer on the aluminum product with ease under the conditions where it has been said to be too difficult to nitride aluminum products. The case nitrided aluminum product can appropriately make sliding parts which require high wear resistance.

摘要翻译： 一种氮化铝产品是通过至少在一部分表面上使铝制品与氮化剂接触而制造的，并且通过在铝制品的熔点温度下将表面上的铝产品用环境气体氮化 或更少，同时保持上述接触。 氮化剂包括铝粉末，并且环境气体实际上包括氮气。 得到的氮化层的深度为5微米以上，壳状硬度为250〜1200mHv。 因此，在被认为太难以氮化铝制品的条件下，可以容易地在铝制品上形成深层和硬质氮化层。 氮化铝制品可以适当地制造需要高耐磨性的滑动部件。