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浏览/检索结果: 共3条，第1-3条 帮助 限定条件 内容类型：专利     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Removal of boron impurity in polysilicon by electrochemically etching of polysilicon film to form porous silicon, performing stabilization treatment, introducing into electron beam melting furnace, and setting vacuum chamber degree. 专利 申请日期: 2015-01-01, 公开日期: 2015-03-18 作者:  GUO S LI J QIN S TAN Y SHI S YOU X 收藏  |  浏览/下载：9/0  |  提交时间：2019/12/09 Preparation of 740 alloy surface antioxidation coating by electron beam physical vapor deposition method, which includes preheating and depositing, where preheating includes adjusting device vacuum chamber vacuum degree. 专利 申请日期: 2014-01-01, 公开日期: 2014-04-09 作者:  LI J YOU X QIN S TAN Y SHI S LIAO J 收藏  |  浏览/下载：8/0  |  提交时间：2019/12/11 Improving purity of nickel-based superalloy involves performing electron bean smelting process, performing bombardment of nickel-based superalloy substrate until completely melted, smelting, and cooling. 专利 申请日期: 2014-01-01, 公开日期: 2014-04-02 作者:  LI J YOU X QIN S TAN Y SHI S LIAO J 收藏  |  浏览/下载：4/0  |  提交时间：2019/12/11