کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7888908 | 1509796 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Non-aqueous gelcasting of AlN ceramics using a low-toxicity monomer (DMAA) as gelling agent
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this study, high-performance aluminum nitride (AlN) samples were prepared by gelcasting based on a low-toxicity monomer and organic solvents. We prepared a 50 vol% solid content AlN suspension with a solvent ratio of 3:1, 6 wt% N,N-dimethylacrylamide (DMAA) and 0.15 wt% Polyethyleneimine (PEI); after degassing, low viscosity and high stability were observed. It was proven that the AlN green bodies exhibited a bending strength of 18.68 MPa, which met the requirements for machining. An optimum debinding process was developed and the TG-DSC curves showed that the AlN green bodies were heated at 1 °C/min from 450 to 800 °C. The relative density, apparent porosity, bending strength, and thermal conductivity of the AlN sintered bodies prepared by non-aqueous gelcasting were 98.5%, 0.22%, 310 MPa, and 159 W mâ1 Kâ1 respectively, representing optimum conditions. The uniform miscrostructure of the sintered bodies was observed by SEM images.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 2, 1 February 2018, Pages 1621-1626
Journal: Ceramics International - Volume 44, Issue 2, 1 February 2018, Pages 1621-1626
نویسندگان
Lin Guo, Jian Yang, Yongbao Feng, Tai Qiu,