公开(公告)号：US4632910A

公开(公告)日：1986-12-30

申请号：US738950

申请日：1985-05-29

申请人： June-Gunn Lee ,  Young-Wook Kim ,  Tae-Hee Park ,  Long Choi ,  Sang-Ho Lee ,  Kam-Yong Jang

发明人： June-Gunn Lee ,  Young-Wook Kim ,  Tae-Hee Park ,  Long Choi ,  Sang-Ho Lee ,  Kam-Yong Jang

IPC分类号： C04B35/584 ,  B23B27/14 ,  B23P15/28 ,  C04B35/58 ,  C04B35/593

CPC分类号： C04B35/593 ,  B23B27/148 ,  Y10T428/2993 ,  Y10T82/10

摘要： A sintered material based on silicon nitride for use in preparing cutting tools is provided. This material is prepared by sintering a mixture of silicon nitride containing 2-10 percent by weight of yttrium oxide, 1-5 percent by weight of aluminium oxide and 10-40 percent by weight of titanium carbide coated with titanium nitride under hot pressing or sintering followed by hot isostatic pressing at an elevated temperature ranging from 1600.degree. C. to 1800.degree. C. The coated titanium carbide in the form of powder can be formed by depositing a film of titanium nitride on the surface of titanium carbide in the presence of gaseous titanium tetrachloride, hydrogen and nitrogen under the partial pressure of 0.1 to 0.5 atmosphere at 1000.degree. C. to 1500.degree. C. The material can endow the cutting tools with higher toughness and strength and longer life.

摘要翻译： 提供了一种用于制备切削工具的基于氮化硅的烧结材料。 该材料通过在热压或烧结下烧结含有2-10重量％的氧化钇，1-5重量％的氧化铝和10-40重量％的涂覆有氮化钛的碳化钛的氮化硅的混合物来制备 然后在1600℃至1800℃的高温下进行热等静压。可以通过在气体存在下在碳化钛表面上沉积氮化钛膜来形成粉末形式的涂覆的碳化钛 四氯化钛，氢气和氮气，分压为0.1〜0.5℃，1000〜1500℃。该材料可赋予切削刀具更高的韧性和强度，寿命更长。