| 2 | THERMODYNAMIC PARAMETERS IN THE NUCLEATION OF LIQUID IRON显示文摘By using of electrolytic pure iron, the specimens containing different oxide content were made in a Mo wire furnace. The DTA method was employed to measure the undercooling of liquid iron during solidification. The relations between the cleanness of liquid iron and undercooling, thermodynamic driving force of nucleation, the nucleus forming energy, as well as the critical radius of nucleus have been investigated. The results showed that with the increase of cleanness of liquid iron the undercooling and thermodynamic driving force increased, while the nucleus forming energy and critical radius of nucleus decreased. | C.Huang B.Song J.H.Mao Q.Lin P.Zhao | 2003 | Acta Metallurgica Sinica(English Letters)2003，16，6： | 0 |
| 3 | 干冰冲击在超音速火焰喷涂厚WC-Co涂层中的应用显示文摘超音速火焰喷涂过程中产生的残余应力会限制涂层的厚度。在研究中,为了获得高质量WC-Co厚涂层,在超音速火焰喷涂过程中采用了干冰冲击技术,这主要是由于干冰冲击对涂层产生了高效冷却和机械锤平。本研究采用X射线衍射,扫描电镜和能谱能对粉末和涂层得微观结构和相分布进行表征。此外,本文对涂层的硬度、抗滑动摩擦等性能也进行了研究。最后我们得出结论,干冰冲击能有效地细化晶粒尺寸,提高涂层硬度,致密度和抗滑动摩擦性能。本研究采用超音速火焰喷涂和干冰冲击联合的工艺方法喷涂WC-Co粉末,以提高冷却效率和喷涂过程中的类喷丸效应。该方法也可以用来制备厚的WC-Co涂层。本文还研究了涂层的微观组织、相组成和摩擦磨损性能。 | S.Dong B.Song B.Hansz H.Liao C.Coddet Belfort 曾瑞霖 | 2015 | 热喷涂技术2015，0，2： | 0 |
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