公开(公告)号：US5024901A

公开(公告)日：1991-06-18

申请号：US346774

申请日：1989-05-03

申请人： Diwakar Garg ,  Paul N. Dyer ,  Leslie E. Schaffer ,  Ernest L. Wrecsics ,  Duane Dimos ,  Carl F. Mueller

发明人： Diwakar Garg ,  Paul N. Dyer ,  Leslie E. Schaffer ,  Ernest L. Wrecsics ,  Duane Dimos ,  Carl F. Mueller

IPC分类号： C23C16/14 ,  C23C16/30 ,  C23C28/00

CPC分类号： C23C16/30 ,  C23C16/14 ,  C23C28/00 ,  Y10T428/12576 ,  Y10T428/12583 ,  Y10T428/1284 ,  Y10T428/12944

摘要： The method for producing the disclosed material comprises chemical vapor depositing on the substrate a substantially columnar, intermediate layer of tungsten and chemical vapor depositing on the intermediate layer a non-columnar, substantially lamellar outer layer of a mixture of tungsten and tungsten carbide. The tungsten carbide comprises W.sub.2 C, W.sub.3 C, or a mixture of both wherein the ratio of the thickness of the tungsten intermediate layer to the thickness of the outer layer is at least: (a) 0.35 in the case of tungsten plus W.sub.2 C in the outer layer, (b) 0.6 in the case of a mixture of tungsten and W.sub.3 C in the outer layer and (c) 0.35 in the case of mixtures of tungsten and W.sub.2 C and W.sub.3 C in the outer layer. The chemical vapor deposition steps are carried out at pressures within the range of 1 Torr to 1,000 Torr and temperatures within the range of about 300.degree. to about 650.degree. C.

摘要翻译： 用于生产所公开的材料的方法包括在基底上化学气相沉积基本上柱状的钨中间层和在中间层上沉积钨和碳化钨混合物的非圆柱形，基本上层状的外层的化学气相。 碳化钨包括W2C，W3C或两者的混合物，其中钨中间层的厚度与外层的厚度的比至少为：（a）在外加层中钨加W2C的情况下为0.35 ，（b）在外层为钨和W3C的混合物的情况下为0.6，（c）在外层为钨和W2C和W3C的混合物的情况下为0.35。 化学气相沉积步骤在1乇至1000乇范围内的压力和约300至约650℃范围内的温度下进行。

公开(公告)号：US4855188A

公开(公告)日：1989-08-08

申请号：US153738

申请日：1988-02-08

申请人： Diwakar Garg ,  Paul N. Dyer ,  Leslie E. Schaffer ,  Ernest L. Wrecsics ,  Duane Dimos ,  Carl F. Mueller

发明人： Diwakar Garg ,  Paul N. Dyer ,  Leslie E. Schaffer ,  Ernest L. Wrecsics ,  Duane Dimos ,  Carl F. Mueller

IPC分类号： C23C14/06 ,  C23C16/14 ,  C23C16/30 ,  C23C16/32 ,  C23C28/00

CPC分类号： C23C28/00 ,  C23C16/14 ,  C23C16/30 ,  Y10T428/12576 ,  Y10T428/12583 ,  Y10T428/1284 ,  Y10T428/12944

摘要： A highly erosive and abrasive wear resistant composite coating system is described in which an intermediate layer of substantially pure tungsten is deposited on a substrate. An outer layer is then deposited comprised of a mixture of tungsten and tungsten carbide, with the tungsten carbide consisting of W.sub.2 C, W.sub.3 C or a mixture of both. The thickness of the intermediate layer is sufficient to confer substantial erosive and abrasive wear resistance characteristics on the composite coating system. The ratio of the thickness of the intermediate layer to the thickness of the outer layer is controlled and is at least above 0.30 in the cases of W+W.sub.3 C, W+W.sub.2 C+W.sub.3 C and W+W.sub.2 C coatings.

公开(公告)号：US4873152A

公开(公告)日：1989-10-10

申请号：US157550

申请日：1988-02-17

申请人： Diwakar Garg ,  Paul N. Dyer ,  Duane Dimos

发明人： Diwakar Garg ,  Paul N. Dyer ,  Duane Dimos

IPC分类号： C23C16/14 ,  C23C16/01 ,  C23C16/30 ,  C23C16/56

CPC分类号： C23C16/56 ,  C23C16/30 ,  Y10T428/12576 ,  Y10T428/12583 ,  Y10T428/1284 ,  Y10T428/12944

摘要： "A coated substrate product is described wherein the outer coating on the substrate is comprised of a chemically vapor deposited and heat treated mixture of tungsten and tungsten carbide. The tungsten carbide phase consists of W.sub.2 C or W.sub.3 C or a mixture of W.sub.2 C and W.sub.3 C. During the heat treating, the coated substrate is heated to the deposition temperature or not substantially above the deposition temperature in a non-reactive atmosphere. The heat treating temperature is sufficient to confer a desired improvement in erosive and abrasive wear resistance in the outer coating but does not result in substantial degradation of the mechanical properties of the substrate or in formation of undesirable inter-metallic layers".

公开(公告)号：US5262202A

公开(公告)日：1993-11-16

申请号：US370412

申请日：1989-06-20

申请人： Diwakar Garg ,  Paul N. Dyer ,  Duane Dimos

发明人： Diwakar Garg ,  Paul N. Dyer ,  Duane Dimos

IPC分类号： C23C16/56 ,  C23C16/00

CPC分类号： C23C16/56

摘要： A method for heat treating a coated substrate is described wherein the outer coating on the substrate is comprised of a chemically vapor deposited mixture of tungsten and tungsten carbide. The coated substrate is heated to the deposition temperature or not substantially above the deposition temperature in a non-reactive atmosphere. The heat treating temperature is sufficient to confer a desired improvement in erosive and abrasive wear resistance in the outer coating but does not result in substantial degradation of the mechanical properties of the substrate or in formation of undesirable inter-metallic layers.

摘要翻译： 描述了一种用于热处理涂覆的基底的方法，其中基底上的外涂层由钨和碳化钨的化学气相沉积混合物组成。 将涂覆的基底在非反应性气氛中加热至沉积温度或基本上不超过沉积温度。 热处理温度足以在外涂层中赋予腐蚀性和耐磨损性的所需改善，但不会导致基材的机械性能的显着降解或形成不期望的金属间层。