公开(公告)号：US20150330922A1

公开(公告)日：2015-11-19

申请号：US14655154

申请日：2013-11-04

Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.

Inventor： Hajime OTA ,  Taichiro NISHIKAWA ,  Kazuo YAMAZAKI ,  Masao SAKUTA ,  Takeshi TOKUDA

IPC: G01N25/04 ,  F02P17/00 ,  G01N33/20 ,  C22C19/03 ,  C22C19/05

CPC classification number: G01N25/04 ,  C22C19/005 ,  C22C19/03 ,  C22C19/05 ,  C22C19/058 ,  C22F1/10 ,  F02P17/00 ,  G01N17/00 ,  G01N33/20 ,  H01T13/39 ,  H01T13/58

Abstract: A sample composed of a nickel-based metal is immersed in a corrosive solution (aqueous solution containing an acid and sodium chloride). The sample that has been immersed in the corrosive solution is exposed to a flame of engine oil, and further heated. By immersing the sample in the particular corrosive solution, a Ni-enriched phase which is deficient in additional elements and in which the Ni concentration increases is formed in a surface layer region of the sample. By exposing the sample having the Ni-enriched phase to the flame of the engine oil, components in the engine oil are activated and brought into contact with the sample to form a low-melting point phase in the surface layer region of the sample. By heating the sample having the low-melting point phase to melt the low-melting point phase and resolidifying the low-melting point phase, particles and the like can be formed depending on the type of material of the sample. The ease of the generation of particles can be evaluated by using simple equipment instead of an engine for testing.

Abstract translation: 将由镍基金属构成的样品浸渍在腐蚀性溶液（含有酸和氯化钠的水溶液）中。 浸在腐蚀性溶液中的样品暴露于发动机油的火焰中，并进一步加热。 通过将样品浸渍在特定的腐蚀性溶液中，在样品的表层区域中形成附加元素不足且Ni浓度增加的富Ni相。 通过将具有富Ni相的样品暴露于发动机油的火焰，发动机油中的组分被激活并与样品接触，以在样品的表面层区域形成低熔点相。 通过加热具有低熔点相的样品以熔化低熔点相并重新凝固低熔点相，可以根据样品的材料的类型形成颗粒等。 可以通过使用简单的设备而不是用于测试的发动机来评估颗粒的产生的容易性。