超细硬质合金的固相烧结研究_外文翻译.zip
超细硬质合金的固相烧结研究_外文翻译,study of solid-state sintered ?ne-grained cemented carbidessubmicron cemented carbides are most often produced by liquid phase sintering. to retard the grain gr...
该文档为压缩文件,包含的文件列表如下:
内容介绍
原文档由会员 牛奶咖啡 发布
Study of solid-state sintered ?ne-grained cemented carbides
Submicron cemented carbides are most often produced by liquid phase sintering. To retard the grain growth during sintering,these materials are sintered at low temperatures and with addition of grain growth inhibitors, e.g. Cr and V. The common hypoth-esis is that the sintered material would bene?t from a more evenly distributed inhibitor in the WC raw material, in order to controlthe grain growth during both the solid-state and liquid phase part of the sintering.Aiming to study the distribution of Cr speci?cally after solid-state sintering, a Cr-doped WC-powder was mixed with Co andexcess of carbon, and subsequently hot-pressed for 1 h and 30 MPa at 1200 C. This transmission electron microscopy study showsthat Cr is concentrated to the surfaces of the WC grains in the sample after mentioned solid-state sintering.
纳米硬质合金是通常是通过液相烧结生产。为了延缓烧结中的晶粒生长，通常在较低的温度和添加晶粒生长抑制剂的烧结，例如铬和钒。为了控制在固液相烧结过程中的晶粒生长，前提是在碳化钨原料中的均匀分布的抑制剂有利于烧结材料。为了研究固相烧结后铬的分布，含铬碳化钨粉和钴和过量的碳均匀混合，随后在1200℃, 30MPa热压下1 h。透射电子显微镜的研究表明铬是集中在固相烧结后的碳化钨晶粒表面。
Submicron cemented carbides are most often produced by liquid phase sintering. To retard the grain growth during sintering,these materials are sintered at low temperatures and with addition of grain growth inhibitors, e.g. Cr and V. The common hypoth-esis is that the sintered material would bene?t from a more evenly distributed inhibitor in the WC raw material, in order to controlthe grain growth during both the solid-state and liquid phase part of the sintering.Aiming to study the distribution of Cr speci?cally after solid-state sintering, a Cr-doped WC-powder was mixed with Co andexcess of carbon, and subsequently hot-pressed for 1 h and 30 MPa at 1200 C. This transmission electron microscopy study showsthat Cr is concentrated to the surfaces of the WC grains in the sample after mentioned solid-state sintering.
纳米硬质合金是通常是通过液相烧结生产。为了延缓烧结中的晶粒生长，通常在较低的温度和添加晶粒生长抑制剂的烧结，例如铬和钒。为了控制在固液相烧结过程中的晶粒生长，前提是在碳化钨原料中的均匀分布的抑制剂有利于烧结材料。为了研究固相烧结后铬的分布，含铬碳化钨粉和钴和过量的碳均匀混合，随后在1200℃, 30MPa热压下1 h。透射电子显微镜的研究表明铬是集中在固相烧结后的碳化钨晶粒表面。
