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用氟化物做硬化剂的水玻璃自硬砂
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作者 P.L.Jain p.k.panda 彭规锦 《大型铸锻件》 1981年第3期49-51,共3页
印度国家铸锻工艺研究所研究了用氟化物做水玻璃自硬砂的硬化剂。结果显示它优于其他有机或无机硬化剂。所获铸件尺寸和表面光洁度比其他自硬工艺为好。砂的存放期、强度和其他性能完全满意,出砂性能比CO2自硬法优越,成本也低。适合于... 印度国家铸锻工艺研究所研究了用氟化物做水玻璃自硬砂的硬化剂。结果显示它优于其他有机或无机硬化剂。所获铸件尺寸和表面光洁度比其他自硬工艺为好。砂的存放期、强度和其他性能完全满意,出砂性能比CO2自硬法优越,成本也低。适合于铸铁和有色金属铸件的造型制芯。 展开更多
关键词 水玻璃自硬砂 硬化剂 氟化物 有色金属铸件 表面光洁度 造型制芯 性能比 研究所
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Processing and characterization of lead-free ceramics on the base of sodium-potassium niobate
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作者 E.D.Politova N.V.Golubko +6 位作者 G.M.Kaleva A.V.Mosunov N.V.Sadovskaya S.Yu.Stefanovich D.A.Kiselev A.M.Kislyuk p.k.panda 《Journal of Advanced Dielectrics》 CAS 2018年第1期29-36,共8页
Lead-free sodium-potassium niobate-based piezoelectric materials are most intensively studied in order to replace the widely used Pb-based ones.In this work,the effects of modification of compositions by donor and acc... Lead-free sodium-potassium niobate-based piezoelectric materials are most intensively studied in order to replace the widely used Pb-based ones.In this work,the effects of modification of compositions by donor and acceptor dopants in the A-and B-sites of perovskite lattice on structure,dielectric,ferroelectric,and piezoelectric properties of ceramics from Morphotropic Phase Boundary in the(1-x)(K_(0.5)Na_(0.5))NbO_(3)-xBaTiO_(3) system and in compositions with x=0.05 and 0.06 additionally doped by Ni^(3+) cations have been studied. 展开更多
关键词 (Ka_(0.5)Na_(0.5))NbO_(3) BaTiO_(3) perovskite structure solid solutions phase transitions dielectric FERROELECTRIC piezoelectric properties
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