Abstract: An anti-corrosion ceramic member having a substrate made of a ceramic material, a surface layer made of a fluoride and formed on the substrate, and an intermediate layer formed between the substrate and the surface layer and having the ceramic material of the substrate and the fluoride.

Abstract: An anti-corrosion ceramic member having a substrate made of a ceramic material, a surface layer made of a fluoride and formed on the substrate, and an intermediate layer formed between the substrate and the surface layer and having the ceramic material of the substrate and the fluoride.

Abstract: A process is disclosed for producing a corrosion-resistant ceramic member, which process includes the steps of preparing a sintered body made of a ceramic material containing at least aluminum, immersing the ceramic sintered body in hydrofluoric acid, and forming a film of aluminum fluoride at a surface layer portion of the ceramic sintered body by heating the ceramic sintered body.

Abstract: An automatic analysis system comprising analytical equipment and a host computer connected to the analytical equipment. The host computer assigns identification numbers to pieces of analysis information, respectively, further assigns identification numbers to the pieces of analysis information respectively, to relate the pieces of analysis information to each other, groups a predetermined number of the pieces of analysis information to form pieces of group information, assigns identification numbers to the pieces of group information, respectively, further groups a predetermined number of the pieces of group information to form pieces of group information, and then assigns identification numbers to the pieces of group information, respectively. A storage device is provided for storing the pieces of analysis information and group information to which the identification numbers are given by the host computer.

Abstract: Method of removing a layer of glass formed on a sintered body which is manufactured by hot isostatic pressing of a preformed body of inorganic powder in a pressure medium at a sintering temperature, wherein the sintered body of inorganic powder is retained in an alkali solution of at least 2 percent by weight at a temperature not less than 100.degree. C. for not less than one hour.

Abstract: Method of removing a layer of glass formed on a sintered body which is manufactured by hot isostatic pressing of a preformed body of inorganic powder (e.g., silicon nitride powder and silicon carbide powder) in a pressure medium at a sintering temperature, wherein the sintered body of inorganic powder is retained in alkali solution at a high temperature for a predetermined time, preferably under a predetermined pressure.

Abstract: A material treating apparatus is used for treating powdery, granular and conglomerate materials. The material treating apparatus includes a material supply apparatus for transferring the materials to a predetermined position, particularly for supplying the materials to an automatic crusher. The material treating apparatus includes a crushing system having a crushing vessel transferring unit. The material treating apparatus further includes an analysis sample transferring apparatus particularly suitable for transferring samples formed by a press to a fluorescent X-ray analyzing apparatus. The material treating apparatus includes a fluorescent X-ray analyzing system which is capable of automatically analyzing samples of various kinds. An analyzing method is carried out by the use of the above material treating apparatus. The analyzing method includes a method of vitrifying an inorganic material, which is preferably used for obtaining samples to be analyzed by the X-ray fluorescence analysis.

Abstract: A material supply apparatus for transferring powdery, granular and conglomerated materials, including a base member, a material vessel pooling unit, a plurality of elongate material racks arranged side by side in the material vessel pooling unit, a plurality of material vessels arranged in each of the elongate material racks, a material vessel transferring unit for removing and transferring a selected material vessel from a selected elongate material rack, and control devices for controlling movement of the material vessel pooling unit and for controlling movement of the material vessel transferring unit.

Abstract: A material treating apparatus is used for treating powdery, granular and conglomerate materials. The material treating apparatus includes a material supply apparatus for transferring the materials to a predetermined position, particularly for supplying the materials to an automatic crusher. The material treating apparatus includes a crushing system having a crushing vessel transferring unit. The material treating apparatus further includes an analysis sample transferring apparatus particularly suitable for transferring samples formed by a press to a fluorescent X-ray analyzing apparatus. The material treating apparatus includes a fluorescent X-ray analyzing system which is capable of automatically analyzing samples of various kinds. An analyzing method is carried out by the use of the above material treating apparatus. The analyzing method includes a method of vitrifying an inorganic material, which is preferably used for obtaining samples to be analyzed by the X-ray fluorescence analysis.

Abstract: A material treating apparatus is used for treating powdery, granular and conglomerate materials. The material treating apparatus includes a material supply apparatus for transferring the materials to a predetermined position, particularly for supplying the materials to an automatic crusher. The material treating apparatus includes a crushing system having a crushing vessel transferring unit. The material treating apparatus further includes an analysis sample transferring apparatus particularly suitable for transferring samples formed by a press to a fluorescent X-ray analyzing apparatus. The material treating apparatus includes a fluorescent X-ray analyzing system which is capable of automatically analyzing samples of various kinds. An analyzing method is carried out by the use of the above material treating apparatus. The analyzing method includes a method of vitrifying an inorganic material, which is preferably used for obtaining samples to be analyzed by the X-ray fluorescence analysis.

Abstract: An apparatus for automatically and accurately weighing powder materials comprising powder containers containing powder materials, respectively, to be weighed, powder cups for directly receiving powder material from the powder containers, respectively, and means for automatically feeding the powder material from one of the powder containers to one of the weighing cups through a feeder is disclosed. Each of the powder containers is integrally provided with the feeder so that one powder material fed into the weighing cup through the feeder is prevented from contaminating with other powder materials and therefore, the powder material can be accurately weighed. The powder container includes means for improving the accuracy of weighing.

Abstract: An apparatus for automatically and accurately measuring ignition loss of powder samples without requirement of manual handling. The apparatus comprises a weighing section, a heating section and a cooling section which are integrally arranged and the weighing section including a sample supply device and a crucible and tray transporting device. Each of the sections is automatically operated under controlling by a controlling section.