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- W2949969444 abstract "Abstract : Efforts to produce a nonabsorbent microcrystalline quartz body by high-temperature firing of Ca-doped SiO2 that had been precalcined to develop the quartz phase failed. Compositions were formulated in which Ca2SiO4 was the principal phase. Means of doping the compositions to prevent body disintegration, caused by the beta to gamma inversion on cooling, were studied. The presence of sufficient MgO prevented the test discs from dusting and seemed to preserve beta-Ca2SiO4 to room temperature. Similar stabilization was obtained by the introduction of approximately 1 wt-% B2O3, or by the formation of a solid solution having a mole ratio of 1 Ca3(PO4)2:15 Ca2SiO4. The 1 Ba2SiO4:15 Ca2SiO4 composition was not stabilized, but the 1 Ba2SiO4:7 Ca2SiO4 sample was very hard and did not disintegrate until bombarded by X rays. The 1 Mg2SiO4:7 Ca2SiO4 mixture produced a body that dusted on cooling and gave definite X-ray evidence that merwinite (Ca3MgSi2O8) formed. Experiments were made to determine the suitability of AlPO4 as a major phase in a ceramic body. (Author)" @default.
- W2949969444 created "2019-06-27" @default.
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- W2949969444 date "1961-09-13" @default.
- W2949969444 modified "2023-09-27" @default.
- W2949969444 title "INVESTIGATION FOR THE DEVELOPMENT OF CERAMIC BODIES FOR ELECTRON TUBES" @default.
- W2949969444 hasPublicationYear "1961" @default.
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