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公开(公告)号：EP2558614B1
公开(公告)日：2013-11-20
申请号：EP11826120.5
申请日：2011-12-29
申请人： WEFA Singen GmbH
CPC分类号： C23C16/06 , B21C25/025 , C23C16/36
摘要： The invention relates to a method for producing a coating of one or more layers on an extrusion die as a substrate body of a heat-resistant and/or long-term heat-resistant steel material by means of chemical vapour deposition (CVD), comprising the steps of: providing the substrate body from the steel material, in particular hot-work tool steel, that has long-term heat resistance at an extrusion operating temperature in the range between 400°C and 950°C, in particular between 500°C and 640°C, and is intended for interacting with ductile extrusion metal, introducing a first reaction gas, comprising a metal, in particular titanium, into a reactor receiving the substrate body, to provide a coating metal, introducing a second reaction gas, comprising a carbon compound, into the reactor, to provide carbon for the coating, wherein the first and/or the second reaction gas or a further reaction gas provide(s) nitrogen for the coating, and carrying out a CVD coating process with the reaction gases at an average temperature in the range from 700°C to 950°C, in particular 800°C to 900°C, to produce the coating such that the ratio, in particular the percent by weight ratio and/or the atomic percent ratio, between carbon and nitrogen in the at least one layer of the coating is C/N > 1, in particular C/N > = 1.5, preferably C/N > 2, and/or the at least one layer of the coating has a columnar and/or stalk-like structure with a multiplicity of structural portions, in particular column-like structural portions, that are adjacent to one another, parallel to one another and aligned perpendicularly to the surface of the substrate.
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公开(公告)号：EP2558614A1
公开(公告)日：2013-02-20
申请号：EP11826120.5
申请日：2011-12-29
申请人： WEFA Singen GmbH
CPC分类号： C23C16/06 , B21C25/025 , C23C16/36
摘要： The invention relates to a method for producing a coating of one or more layers on an extrusion die as a substrate body of a heat-resistant and/or long-term heat-resistant steel material by means of chemical vapour deposition (CVD), comprising the steps of: providing the substrate body from the steel material, in particular hot-work tool steel, that has long-term heat resistance at an extrusion operating temperature in the range between 400°C and 950°C, in particular between 500°C and 640°C, and is intended for interacting with ductile extrusion metal, introducing a first reaction gas, comprising a metal, in particular titanium, into a reactor receiving the substrate body, to provide a coating metal, introducing a second reaction gas, comprising a carbon compound, into the reactor, to provide carbon for the coating, wherein the first and/or the second reaction gas or a further reaction gas provide(s) nitrogen for the coating, and carrying out a CVD coating process with the reaction gases at an average temperature in the range from 700°C to 950°C, in particular 800°C to 900°C, to produce the coating such that the ratio, in particular the percent by weight ratio and/or the atomic percent ratio, between carbon and nitrogen in the at least one layer of the coating is C/N > 1, in particular C/N > = 1.5, preferably C/N > 2, and/or the at least one layer of the coating has a columnar and/or stalk-like structure with a multiplicity of structural portions, in particular column-like structural portions, that are adjacent to one another, parallel to one another and aligned perpendicularly to the surface of the substrate.
摘要翻译： 本发明涉及一种通过化学气相沉积（CVD）在作为耐热和/或长期耐热钢材料的基体的挤出模具上制造一层或多层涂层的方法，该方法包括： 以下步骤：由钢材，特别是热作模具钢提供具有在400℃和950℃之间，特别是500℃之间的挤压操作温度下的长期耐热性的基体 并且预期用于与延性挤出金属相互作用，将包含金属，特别是钛的第一反应气体引入接收基体的反应器中，提供涂覆金属，引入第二反应气体， 包含碳化合物进入反应器以为涂层提供碳，其中第一和/或第二反应气体或另外的反应气体为涂层提供氮气，并且用该反应进行CVD涂覆工艺 平均温度为700℃至950℃，特别是800℃至900℃的气体，以产生该涂层，使得该比率，特别是重量百分比和/或原子百分比比率 ，在涂层的至少一个层中的碳和氮之间的比例为C / N> 1，特别是C / N> = 1.5，优选C / N> 2，和/或涂层的至少一个层具有 柱状和/或茎状结构具有多个相互平行且垂直于衬底表面排列的彼此相邻的结构部分，特别是柱状结构部分。
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