Combustion Flame Synthesizing of Diamond Film and Joining on Metal Surface

金刚石膜的燃烧火焰合成及金属表面连接

• 批准号: 07650081
• 负责人: KAMIYA Osamu
• 金额: $ 1.54万
• 依托单位: Akita University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07650081/
• 关键词: Synthesized Diamond; Combustion Flame Synthesizing; Acetylene Flame; Chemical Vapor Deposition; Molybdenum; Joining; Surface Roughness; モリブデン; ステンレス鋼; アセチレン; 燃焼炎法; CVD法; 合成ダイヤモンド

Using a combustion flame of oxygen and mixture gas with acetylene, it synthesized diamond film on the metal surface. It is that the purpose of this study lets the synthesized diamond film join the Mo metal surface. When temperature of Mo surface is lower than 1200K,the diamond synthesized comes off the metal surface. The crystallization of diamond synthesized by low temperature was octahedron construction. On the other hand, the diamond synthesized joins to the metal surface strongly when heats up Mo surface temperature than 1400 K.The form of diamond of this time was a sphere of several micron. The matter letting join a diamond from a result of X-ray diffraction is taken as tri-oxidized Mo (MoO_3). The diamond synthesized was classified in I a type and I b type to contain impurities such as nitrogen or voids when judged from infrared rays absorption peak.Using a computer simulation, heat stress to occur in a diamond and a boundary surface with the metal surface was calculated. From this calculation result, the existence of MoO_3 did decrease of stress, besides, the joining strength of boundary surface increase.It examined the surface finish condition and influence of the surface roughness given to diamond composition next. Mo surface of diamond paste finish, composition density of diamond is the highest when compares the surface finish by Al_2O_3 particle or SiC particle. It makes the Mo surface roughness coarse, and diamond film comes to join even the low surface temperature furthermore. For example, in the surface roughness of Ra=0.82 mum, it gets possible to let the metal surface join composition diamond by low temperature of 1323K.

利用氧气与乙炔混合气体的燃烧火焰，在金属表面合成金刚石膜。这就是本研究的目的，让合成的金刚石膜与Mo金属表面结合。当Mo表面温度低于1200K时，合成的金刚石脱离金属表面。低温合成的金刚石结晶为八面体结构。另一方面，当Mo表面温度高于1400k时，合成的金刚石与金属表面结合强烈。这一时期钻石的形状是一个几微米的球体。从x射线衍射的结果来看，加入金刚石的物质被认为是三氧化Mo （MoO_3）。根据红外吸收峰判断，合成的金刚石分为I a型和I b型，含有氮或空隙等杂质。利用计算机模拟计算了金刚石及其与金属表面的交界面所产生的热应力。从计算结果来看，MoO_3的存在确实降低了应力，并提高了边界面的连接强度。其次考察了表面光洁度状况和表面粗糙度对金刚石成分的影响。与Al_2O_3颗粒表面处理和SiC颗粒表面处理相比，Mo表面处理的金刚石成分密度最高。使钼表面粗糙度变粗，并且在较低的表面温度下也能与金刚石膜结合。例如，在Ra=0.82 ma的表面粗糙度下，通过1323K的低温使金属表面加入成分金刚石成为可能。

项目成果

神谷修,熊谷一男,山辰也: "燃焼炎によるMo,ステンレス鋼表面へのダイヤモンド皮膜の形成" 溶射. 33巻・1号. 1-7 (1996)

Osamu Kamiya、Kazuo Kumagai、Tatsuya Yama：“通过燃烧火焰在钼和不锈钢表面形成金刚石膜”热喷涂，第 33 卷，第 1. 1-7 期。

神谷 修: "燃焼炎によるMo,ステンレス鋼表面へのダイヤモンド皮膜の形成" 溶射. 33(印刷中). (1996)

Osamu Kamiya：“通过燃烧火焰在钼和不锈钢表面形成金刚石薄膜”33（印刷中）。

Osamu Kamiya, Kazuo Kumagai and Tatuya Yama: "Synthesize of Diamond-film on Mo and Stainless Steel Surface by Combustion-frame" Journal of Japan Thermal Spraying Sociaty. Vol.33-No.1. 1-7 (1996)

Osamu Kamiya、Kazuo Kumagai 和 Tatuya Yama：“通过燃烧框架在钼和不锈钢表面合成金刚石薄膜”日本热喷涂学会杂志。