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Boride layer growth kinetics during boriding of molybdenum by the Spark Plasma Sintering (SPS) technology.

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Boride layer growth kinetics during boriding of molybdenum by the Spark Plasma Sintering (SPS) technology.
นักวิจัย : Yu, L. G. , Khor, Khiam Aik. , Sundararajan, G.
คำค้น : DRNTU::Engineering::Mechanical engineering.
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2549
อ้างอิง : Yu, L. G., Khor, K. A., & Sundararajan, G. (2006). Boride layer growth kinetics during boriding of molybdenum by the Spark Plasma Sintering (SPS) technology. Surface and Coatings Technology, 201(6), 2849–2853. , http://hdl.handle.net/10220/8237 , http://dx.doi.org/10.1016/j.surfcoat.2006.05.042
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Surface and coatings technology
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Molybdenum borides have potential industrial applications as abrasive, corrosion-resistant and electrode materials due to their high hardness values, chemical inertness, and electronic conductivity. In this work, boride layers are formed on the surface of Mo samples using a pack boriding method with the assistant of the spark plasma sintering (SPS) technique. The process was performed in the temperature range 1000–1400 °C and with a holding time of 30 min at the preset temperature. The microstructure, microhardness, and fracture toughness of the molybdenum boride layer are investigated by optical microscopy, X-ray diffraction and microhardness indentations. Results showed that the boride layer, mainly composed of MoB, have thickness in the range ∼ 6–155 μm. The boriding kinetics is studied by linking the boride layer thickness with the boriding temperature. The activation energy and pre-exponential constant are estimated from the experimental results, and are found to be 218.8 J/mol and 1.41 cm2/s respectively. The MoB layers have a preferred orientation in the (002) direction, which is reflected by a distinct columnar growth observed in the optical micrographs of polished cross-sections of SPS samples.

บรรณานุกรม :
Yu, L. G. , Khor, Khiam Aik. , Sundararajan, G. . (2549). Boride layer growth kinetics during boriding of molybdenum by the Spark Plasma Sintering (SPS) technology..
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Yu, L. G. , Khor, Khiam Aik. , Sundararajan, G. . 2549. "Boride layer growth kinetics during boriding of molybdenum by the Spark Plasma Sintering (SPS) technology.".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Yu, L. G. , Khor, Khiam Aik. , Sundararajan, G. . "Boride layer growth kinetics during boriding of molybdenum by the Spark Plasma Sintering (SPS) technology.."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2549. Print.
Yu, L. G. , Khor, Khiam Aik. , Sundararajan, G. . Boride layer growth kinetics during boriding of molybdenum by the Spark Plasma Sintering (SPS) technology.. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2549.