Executive Summary
The second year project of the spherical reference materials is to manufacture 3 kinds of the transparent or opaque particles, of which the size ranges are 3 to 30um or 10 to lOOum, and also to produce preliminary samples of both glass and carbon beads within a 1 to 10um size range.
1) Transparent barium titanate glass beads, MBP 3-30', which have a 3 to 30um size range, have been produced and sent to the AEA Technology in England for the certification in February 1992. The total amount is lOkgs, instead of the contract quantity 7.5kgs.
2) Opaque glassy carbon beads, GCP3-30, which have a 3 to 30um size range, have also been produced and sent to the same AEA Technology for the certification at the same time. The total amount is also lOkgs, intstead of the contract quantity 7.5kgs.
3) Transparent barium titanate glass beads, MBP 10-100, which have a 10 to lOO#m size range, have been manufactured and sent to the same AEA Technology in April 1992. The total amount is 20kgs, instead of the contract quantity lOkgs, through the courtesy of Union Company, Japan, because BCR(Bureau of Community Reference) of EC commission requested as much as possible.
4) A preliminary study of both transparent barium titanate glass beads and opaque gl.assy carbon beads, of which the size range is 1 to l0um, have been successfully carried out.
The physical characteristics of the above three product materials are measured in several Japanese company laboratories, and given in this report.
The above materials have been sent in one or two packages by air mail, and not split into small sample packs. Segregation in particle size could happen during transportation and also process handling. Therefore complete mixing is neccessary before sample splitting, and the total quantity of a test sample also should be completely mixed before size measurement, because the measuring mass is very small. The third and forth year projects will be to manufacture following 5 kinds of spherical materials.
1) GCRlO-100: Opaque glassy carbon beads of a 10 to 100um size range. The quantity is more than 10kgs.
2) MBPl-10: Transparent glass beads of a 1 to lOum size range. The quantity is more than 5kgs.
3) GCPl-10: Opaque glassy carbon beads of a 1 to 10um size range. The quantity is more than 5kgs.
4) LBP150-650: Transparent glass beads of a 150 to 650bm size range. The quantity is more than 20kgs.
5) GCP150-650: Opaque glassy carbon beads of a 150 to 65OJm size range. The quantity is more than 20kgs.
Note+ The last symbol P in both MBP and GCP beads means the final product, which are sent to AEA in England.