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c285003385銅蟲 (小有名氣)
成功vfd
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Fig. 2 Bending strength of the spinel samples with and without aluminum titanate a) as-sintered samples b) after thermal shock (TS). The strength of the as-sintered samples with Al2TiO5 is given for comparison. Fig. 3 shows scanning electron micrographs of fracture surfaces of as-sintered spinel samples with and without aluminum titanate. The grains of the Al2TiO5-containing ceramic were considerably larger. The increased grain growth during sintering can be attributed to the effect of TiO2, similar as in the case of alumina with small titania additions.10 |

捐助貴賓 (正式寫手)
木星之王
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圖2: 含有以及不含鈦酸鋁的尖晶石樣品的彎曲強(qiáng)度。 a)剛燒結(jié)的樣品 b)熱沖擊實(shí)驗(yàn)之后的樣品。作為對比,圖中給出了摻入鈦酸鋁的燒結(jié)樣品的強(qiáng)度。 圖3給出了含有以及不含鈦酸鋁的燒結(jié)樣品斷面形貌的掃描電鏡圖片。我們可以看到,含有鈦酸鋁的陶瓷中的晶粒尺寸明顯大很多。這主要是因?yàn)闊Y(jié)過程中氧化鈦的存在可促進(jìn)晶粒的長大,與氧化鋁中加入少量氧化鈦的結(jié)果類似。 |
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