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1. 发明授权

US5295668A Metal tube oxidation treatment apparatus 失效
标题翻译：金属管氧化处理装置
公开(公告)号：US5295668A
公开(公告)日：1994-03-22
申请号：US842361
申请日：1992-04-13
申请人： Tadahiro Ohmi , Yoshiyuki Nakahara , Shigeki Hayashi , Takashi Sakanaka , Eiji Ohta , Fumio Nakahara
发明人： Tadahiro Ohmi , Yoshiyuki Nakahara , Shigeki Hayashi , Takashi Sakanaka , Eiji Ohta , Fumio Nakahara
IPC分类号： C21D9/08 , C23C8/10 , C23C8/18
CPC分类号： C21D9/08 , C23C8/10 , C23C8/18
摘要： It is a metal oxidation treatment apparatus for carrying out the inactivation treatment of metal tubes used especially in a super high purity gas piping system and an apparatus of super high vacuum.The support part of a support member is made as a tubular form member, and a tapered part is provided on the outer periphery thereof, and further, since a spring is mounted to be displaceable, even if fluctuation is present in the internal diameter of stainless steel tubes, it is possible to let the stainless tubes easily be supported on the support part. Also, even fluctuation of the length is present in the stainless steel tubes, the support member is always pushed to the stainless steel tubes. Oxidative gas diffusing out of the tube to be treated to the outside thereof can be released to the outside of the oxidation treatment furnace without letting it contact to the tube to be treated.
摘要翻译： PCT No.PCT / JP90 / 01230 Sec。 371日期：1992年4月13日 102（e）日期1992年4月13日PCT 1990年9月25日PCT PCT。公开号WO91 / 05071 日期为1991年04月18日。它是一种金属氧化处理装置，用于特别在超高纯度气体管道系统和超高真空装置中使用的金属管的灭活处理。支撑构件的支撑部分被制成管状构件，并且在其外周上设置有锥形部分，此外，由于弹簧安装成可移动，即使在不锈钢的内径中存在波动钢管，可以使不锈钢管容易地支撑在支撑部分上。此外，不锈钢管中存在长度均匀的波动，总是将支撑构件推到不锈钢管上。从待处理的管扩散到其外部的氧化气体可以释放到氧化处理炉的外部，而不会使其与待处理的管接触。

2. 发明授权

US5407492A Process for forming passivated film 失效
标题翻译：钝化膜形成工艺
公开(公告)号：US5407492A
公开(公告)日：1995-04-18
申请号：US81353
申请日：1993-06-23
申请人： Tadahiro Ohmi , Yoshiyuki Nakahara , Takashi Sakanaka , Eiji Ohta , Satoshi Mizokami
发明人： Tadahiro Ohmi , Yoshiyuki Nakahara , Takashi Sakanaka , Eiji Ohta , Satoshi Mizokami
IPC分类号： C23C8/14 , C23C8/10
CPC分类号： C23C8/14
摘要： A process for a passivated film which is far reduced in the amount of gas discharge and can desorb an adsorbed gas more readily, which process comprises heating a stainless member with a surface roughness, Rmax, of 1.0 .mu.m or less in an atmosphere of a mixture comprising oxygen gas and an inert gas and having a dew point of -95.degree. C. or below, an impurity concentration of 10 ppb or less and an oxygen content 5 ppm 25 vol % at 300.degree. to 420.degree. C.
摘要翻译： PCT No.PCT / JP92 / 00160 Sec。 371日期：1993年6月23日 102（e）日期1993年6月23日PCT提交1992年2月18日PCT公布。出版物WO92 / 14858 日期：1992年9月3日。一种钝化膜的方法，其气体排放量远远减少并且可以更容易地解吸吸附气体，该方法包括加热表面粗糙度Rmax为1.0μm的不锈钢构件以下，含有氧气和惰性气体的露点为-95℃以下，杂质浓度为10ppb以下，氧含量为5ppm，25体积％，300℃〜 420℃

3. 发明授权

US5259935A Stainless steel surface passivation treatment 失效
标题翻译：不锈钢表面钝化处理
公开(公告)号：US5259935A
公开(公告)日：1993-11-09
申请号：US875506
申请日：1992-04-29
申请人： Jeffrey Davidson , Robert Sherman , Richard Paciej , Takashi Sakanaka , Shigeki Hayashi , Yoshiyuki Nakahara
发明人： Jeffrey Davidson , Robert Sherman , Richard Paciej , Takashi Sakanaka , Shigeki Hayashi , Yoshiyuki Nakahara
IPC分类号： C23C8/02 , C23C8/06 , C23C8/10 , C25F3/24
CPC分类号： C23C8/10
摘要： The present invention provides a method for surface passivating stainless steel articles against the effects of corrosive materials having activities anywhere from aqueous salt solutions to corrosive gases such as hydrogen chloride and silane. Additionally, after the treatment and exposure of the article to moisture, when the article is subsequently flushed with a dry gaseous fluid, the time that the article takes to exhibit an acceptable moisture outgassing rate is reduced over an untreated article. In accordance with the present invention, the surface to be passivated is flushed with a dry gaseous fluid, chemically non-reactive with the stainless steel and containing essentially no oxygen. During such flushing, the articles is baked and cooled. The baking is accomplished at a predetermined temperature and time (preferably between about 250.0.degree. C. and about 500.0.degree. C. for about 4.0 hours) to effect, within the oxide layer, a reduction in adsorbed moisture and hydroxide content and an increase in chromium content. The article is allowed to cool after the baking step. Such gaseous fluid can comprise argon having a moisture content of no greater than 10.0 ppb and an oxygen content of about 10 ppb. No improvement was seen in a sample in which nitrogen was used. When nitrogen shows no improvement, the article should be flushed with a rare gas during baking which additionally should contain 10 ppb nitrogen or less.
摘要翻译：本发明提供了一种用于表面钝化不锈钢制品的方法，以抵抗具有从盐水溶液到腐蚀性气体如氯化氢和硅烷的活性的腐蚀性材料的影响。此外，在将物品处理和暴露于水分之后，当制品随后用干燥的气态流体冲洗时，与未处理的制品相比，制品呈现出可接受的水分除气速率所需的时间减少。根据本发明，要被钝化的表面用干燥的气态流体冲洗，与不锈钢化学地不反应并基本上不含氧。在这种冲洗期间，制品被烘烤和冷却。烘烤在预定的温度和时间（优选约250.0℃至约500.0℃，约4.0小时）之间完成，以在氧化物层内实现吸附的水分和氢氧化物含量的降低以及铬的增加内容。烘烤步骤后，让物品冷却。这种气体流体可以包括含水量不大于10.0ppb且氧含量约10ppb的氩。在使用氮气的样品中没有观察到改善。当氮气没有改善时，应在烘烤过程中用稀有气体冲洗物品，此外还应含有10 ppb以下的氮气。

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