摘要:
A rare earth garnet sintered compact which is produced by subjecting a rare earth garnet powder such as YAG to a pre-sintering, sintering the pre-sintered product by HIP, and annealing the sintered product at 1100° C. to 1600° C. in a whole oxygen atmosphere under a whole pressure of 4.5 MPa or more, and has an average crystallite diameter of 0.9 to 9 μm, an optical loss coefficient of 0.002 cm−1 or less and a strain of a transmitted wave of 0.05 λ cm−1 or less.
摘要:
A rare earth garnet sintered compact which is produced by subjecting a rare earth garnet powder such as YAG to a pre-sintering, sintering the pre-sintered product by HIP, and annealing the sintered product at 1100° C. to 1600° C. in a whole oxygen atmosphere under a whole pressure of 4.5 MPa or more, and has an average crystallite diameter of 0.9 to 9 μm, an optical loss coefficient of 0.002 cm−1 or less and a strain of a transmitted wave of 0.05 λ cm−1 or less.
摘要:
A high-purity rare earth metal oxide material powder of purity of 99.9% or over, of which Al content is 5-100 wtppm in metal weight and Si content is 10 wtppm or under in metal weight, and a binder are used to prepare a molding body of which molding density is 58% or over of the theoretical density. The binder is eliminated by thermal treatment, and then the molding body is sintered in an atmosphere of hydrogen or a rare gas or a mixture of them or in a vacuum at a temperature being not lower than 1450° C. and not higher than 1700° C. for 0.5 hour or over to prepare A transparent sintered rare earth metal oxide body represented by a general formula R2O3 (R being at least one element of a group comprising Y, Dy, Ho, Er, Tm, Yb and Lu).
摘要翻译:纯度为99.9%以上的高纯度稀土金属氧化物材料粉末,其中Al含量为金属重量为5-100重量ppm,Si含量为10重量ppm或以下金属重量,使用粘合剂制备 成型体的成型密度为理论密度的58%以上。 通过热处理去除粘合剂,然后将模塑体在氢气或稀有气体或它们的混合气氛中或在不低于1450℃且不高于1700℃的真空中进行烧结 0.5小时以上制备由通式R 2 O 3表示的透明烧结稀土金属氧化物体(R为包含Y,Dy,Ho,Er,Tm,Yb和Lu的至少一种元素)。
摘要:
A rare earth metal oxysulfide represented by a general formula R2O2S (R denotes one kind or two or more kinds of rare earth elements to be selected from a group of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, as wells as Y) is formed into spherical granules. The mean particle size of the granules is 0.05–1 mm and their relative density is 96% or over. The granules are used as a regenerative material at the liquid helium temperature.
摘要翻译:由通式R 2 O 2 S(R)表示的稀土金属氧硫化物(R表示选自以下的一种或两种以上的稀土元素: La,Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Er,Tm,Yb和Lu,如Y所示)形成球形颗粒。 颗粒的平均粒径为0.05〜1mm,相对密度为96%以上。 颗粒在液氦温度下用作再生材料。