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公开(公告)号:US4820362A
公开(公告)日:1989-04-11
申请号:US685910
申请日:1984-12-27
申请人: Alfonso L. Baldi
发明人: Alfonso L. Baldi
IPC分类号: B65D43/02 , C06B45/14 , C08F283/01 , C08J3/09 , C09D5/04 , C23C10/02 , C23C10/04 , C23C10/06 , C23C10/30 , C23C10/34 , C23C10/38 , C23C10/42 , C23C10/48 , C23C10/58 , C23C10/60 , C23C22/74 , F01D5/28
CPC分类号: C08J3/091 , B65D43/022 , C06B45/14 , C08F283/01 , C09D5/04 , C23C10/02 , C23C10/04 , C23C10/06 , C23C10/30 , C23C10/34 , C23C10/38 , C23C10/42 , C23C10/48 , C23C10/58 , C23C10/60 , C23C22/74 , F01D5/28 , B65D2543/00092 , B65D2543/0037 , B65D2543/00435 , B65D2543/00509 , B65D2543/00546 , C08J2333/06 , F05D2250/62 , H05K2201/0209 , Y02T50/67 , Y02T50/671 , Y10S149/114
摘要: Low alloy steel tubes are decarburized, heavily diffusion chromized and heavily diffusion aluminized to protect them against sulfidation. For the diffusion they can be supported upright with one end on layer of diffusion-coating pack on floor of a retort. Surface portions that are to be welded are covered with masking layer that prevents diffusion coating, or with inert layer that reduces the amount of coating. Diffusion aluminizing can also be applied to foils and powder to make pyrophoric product after leaching out much of the introduced aluminum. Powder can also be diffusion boronized. Pyrophoric boron-containing iron or nickel powder mixed with Ba(NO.sub.3).sub.2 will ignite to cause generation of large quantity of NO.sub.2 gas, and generation is improved when powdered boron and/or oxidizer like NaClO.sub.3 is added. Pyrophoric articles containing substantial alloyed boron can be placed in good thermal contact with cool heat sink and exposed to air to stabilize them so that they do not begin to pyrophorically react unless heated to over 70.degree. C. Magnesium powder mixed with powdered boron and Ba(NO.sub.3).sub.2 makes explosive composition.
摘要翻译: 低合金钢管脱碳,大量扩散镀铬,并大量扩散镀铝以保护其不被硫化。 对于扩散,它们可以直立地支撑在蒸馏器地板上的扩散涂层的一端。 要被焊接的表面部分被防止扩散涂层的掩模层或者减少涂层量的惰性层覆盖。 扩散镀铝也可以应用于箔和粉末,以在浸出大部分引入的铝后制成发火产品。 粉末也可以扩散硼化。 与Ba(NO 3)2混合的发火含硼铁或镍粉将会点燃以产生大量的NO 2气体,并且当添加粉末状的硼和/或氧化剂如NaClO 3时,产生得到改善。 含有大量合金硼的发火制品可以放置在与冷却散热器良好的热接触并暴露于空气中以使它们稳定,使得除非加热至70℃以上它们不会开始自燃反应。与粉末状硼和Ba( NO3)2使炸药成分。
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公开(公告)号:US4617202A
公开(公告)日:1986-10-14
申请号:US310085
申请日:1981-10-09
申请人: Alfonso L. Baldi
发明人: Alfonso L. Baldi
IPC分类号: B05B7/22 , B05D1/10 , C23C4/12 , C23C10/02 , C23C10/04 , C23C10/06 , C23C10/30 , C23C10/34 , C23C10/38 , C23C10/42 , C23C10/50 , C23C10/58 , C23C10/60 , C23C22/74 , C23F1/44 , H05H1/42 , C23C11/00
CPC分类号: C23F1/44 , B05B7/226 , B05D1/10 , C23C10/02 , C23C10/04 , C23C10/06 , C23C10/30 , C23C10/34 , C23C10/38 , C23C10/42 , C23C10/50 , C23C10/58 , C23C10/60 , C23C22/74 , C23C4/129 , H05H1/42 , F05B2250/62 , H05K2201/0209
摘要: Diffusion coatings can be masked from portions of a workpiece by combination of layers the outer one of which forms coherent strong shell that holds inner layer or layers in place. All ingredients of these layers can be materials such as nickel, nickel aluminide, chronium, chromic oxide (Cr.sub.2 O.sub.3) and inert diluent, that do not contaminate superalloys or even low alloy or plain carbon steels. Layer can be deposited from suspension in a solution of film-former like and acrylic resin in readily volatilizable solvent such as methyl chloroform or chloroform. Innermost layer can be depletion-preventing and can be omitted. Such a holding shell can also be used to retain on a workpiece surface a layer that causes formation of a diffusion coating. Chromizing can be performed before aluminizing. Low alloy steel conduit can be internally chromized and/or externally chromized or aluminized to make it more desirable for use as high pressure steam boiler heat exchange tubing. Masking mixtures can be pastes extruded into place. Masking with resin-free masking powder while workpiece is subjected to gas-phase diffusion coating is particularly desirable.
摘要翻译: 扩散涂层可以通过层的组合从工件的部分掩蔽,其中外层形成保持内层或多层的相干强的外壳。 这些层的所有成分可以是诸如镍,镍铝,时代,氧化铬(Cr 2 O 3)和惰性稀释剂的材料,其不会污染超级合金甚至低合金或普通碳钢。 层可以从成膜剂和丙烯酸树脂的溶液中的悬浮液沉积在容易挥发的溶剂如甲基氯仿或氯仿中。 最内层可以是消耗性的,可以省略。 这种保持壳也可用于在工件表面上保持形成扩散涂层的层。 镀铝前可进行镀铬处理。 低合金钢管可以内部镀铬和/或外部镀铬或镀铝,使其更适合用作高压蒸汽锅炉换热管。 掩模混合物可以将糊料挤出就位。 特别需要在工件进行气相扩散涂覆时用无树脂的掩蔽粉末进行掩模。
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公开(公告)号:US4260654A
公开(公告)日:1981-04-07
申请号:US73539
申请日:1979-09-07
申请人: Alfonso L. Baldi
发明人: Alfonso L. Baldi
IPC分类号: C08F283/01 , C09D5/04 , C23C10/02 , C23C10/06 , C23C10/30 , C23C10/38 , C23C10/40 , C23C10/42 , C23C10/50 , C23C10/60 , C23C22/74 , F01D5/28 , C23C9/02
CPC分类号: F01D5/288 , C08F283/01 , C09D5/04 , C23C10/02 , C23C10/06 , C23C10/30 , C23C10/38 , C23C10/40 , C23C10/42 , C23C10/50 , C23C10/60 , C23C22/74 , F05D2250/62 , Y10T428/1275
摘要: Roughening effect of low-temperature diffusion aluminizing of age-hardenable stainless steels, is offset by applying a nickel or cobalt plating not over 0.1 mil thick before the aluminizing.
摘要翻译: 老化硬化不锈钢的低温扩散镀铝的粗化效果通过在镀铝之前施加不超过0.1密耳厚的镍或钴镀层来抵消。
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公开(公告)号:US3664765A
公开(公告)日:1972-05-23
申请号:US3664765D
申请日:1970-03-09
申请人: ASAHI GLASS CO LTD
CPC分类号: C23C10/38 , Y10S428/926 , Y10S428/941 , Y10T428/12854
摘要: AN ALLOY COMPRISED MAINLY OF CHROMIUM, NICKEL AND COBALT AND EXCELLENT IN CORROSION- AND HEAT RESISTANCE, PARTICULARLY, AN ALLOY HAVING THE HIGH CORROSION RESISTANCE TO A HIGH TEMPERATURE COMBUSTION GAS CONTAINING SULFUR OXIDES AND ALKALI COMPOUNDS AND SUITABLE FOR A BLADE FOR A GAS TURBINE. THE SAID ALLOY IS PROVIDED WITH A CHROMIUM DIFFUSION LAYER ON ITS SURFACE BY A CHROMIZING TREATMENT.
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