1. A discharge lamp comprising:
a sealed discharge vessel defining a discharge space having a volume and comprising a filling including metal halides and a rare gas and being free of Hg and Th;
at least two electrodes projecting into said discharge space, said electrodes being free of Th,
wherein said metal halides are provided in an amount of 7.1-11.4 \u03bcgmm3 of the volume of said discharge space and comprise NaI and ScI3 in such amounts that a ratio of masses of NaI to ScI3 is 1.2-1.6.
2. The discharge lamp of claim 1, wherein said metal halides further comprise at least InI.
3. The discharge lamp of claim 1, where wherein said metal halides consist essentially of NaI, ScI3, ZnI2 and InI.
4. The discharge lamp of claim 1, wherein said metal halides are provided in an amount of 8.5-10.5 \u03bcgmm3 of the volume of said discharge space.
5. The discharge lamp of claim 1, wherein the volume of said discharge space is 10-45 mm3.
6. The discharge lamp of claim 1, wherein the volume is 19-25 mm3.
7. The discharge lamp of claim 1, wherein the ratio of the masses of Nal to ScI3 is 1.3-1.4.
8. The discharge lamp of claim 1, further comprising an outer envelope disposed around said discharge vessel, wherein said outer envelope is sealed and filled with a gas.
9. The discharge lamp of claim 8, wherein said outer envelope is filled with a gas having a thermal conductivity of 60-90 mWm*K at 800\xb0 C.
10. The lamp of claim 1, wherein said rare gas is xenon provided at a cold pressure of 11-17 bar.
11. The lamp of claim 1, wherein said electrodes are made of tungsten.
12. The lamp of claim 1, wherein said electrodes are rod-shaped with a rod diameter of 280-320 \u03bcm.
13. The lamp of claim 1, wherein said metal halides further comprise at least ZnI2, and wherein an amount of the ZnI2 is 4-6 wt-% of said metal halide.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. Water-based, biodegradable lubricant, comprising:
5 to 80% by weight of water-soluble polyalkylene glycol that is selected from the group composed of statistically distributed polyoxyethylene units andor polyoxypropylene units andor other polyoxyalkylene components, a block polymer that composed of polyoxyethylene units andor polyoxypropylene units andor other polyoxyalkylene components,
0.5 to 20% by weight of foaming or non-foaming emulsifiers from the class of anionic, non-ionic, or cationic surfactants, water-soluble or water-emulsifiable carboxylic acid esters,
0.5 to 50% by weight of anti-icing additives, selected from the group that consists of alkylene glycol, glycerol, salts or ionic liquids,
0.05 to 10% by weight of corrosion additives,
0.001 to 1% by weight of additives for preventing the formation of foam, and
0.05 to 5% by weight of friction-reducing agents,
water added to make 100% by weight.
2. Lubricant according to claim 1, further comprising:
0.001 to 0.5% by weight of biocides, andor
0.05 to 5% by weight of nanoparticles.
3. Lubricant according to claim 2, further comprising:
0.5 to 40% by weight of lubricant thickener, selected from the group that is comprised of metal soaps that are composed of monocarboxylic acids andor dicarboxylic acids, ureas, sheet silicates, solid lubricants, and aerosil.
4. (canceled)
5. (canceled)
6. Lubricant according to claim 1, further comprising:
0.5 to 40% by weight of lubricant thickener, selected from the group that is comprised of metal soaps that are composed of monocarboxylic acids andor dicarboxylic acids, ureas, sheet silicates, solid lubricants, and aerosil
7. Method of lubricating drive elements, comprising the steps of:
providing a biodegradable lubricant formed of:
5 to 80% by weight of water-soluble polyalkylene glycol that is selected from the group composed of statistically distributed polyoxyethylene units andor polyoxypropylene units andor other polyoxyalkylene components, a block polymer that composed of polyoxyethylene units andor polyoxypropylene units andor other polyoxyalkylene components,
0.5 to 20% by weight of foaming or non-foaming emulsifiers from the class of anionic, non-ionic, or cationic surfactants, water-soluble or water-emulsifiable carboxylic acid esters,
0.5 to 50% by weight of anti-icing additives, selected from the group that consists of alkylene glycol, glycerol, salts or ionic liquids,
0.05 to 10% by weight of corrosion additives,
0.001 to 1% by weight of additives for preventing the formation of foam, and
0.05 to 5% by weight of friction-reducing agents, and
water added to make 100% by weight; and
applying the lubricant to the drive elements.
8. Method of lubricating drive elements according to claim 7, wherein said drive elements to which the lubricant is applied are selected from the group consisting of chains, gears, bearings and shaft.
9. Method of lubricating drive elements according to claim 7, wherein the lubricant is applied in the form of one of a foam, solution and emulsion by means of a spray system.
10. Method of lubricating drive elements according to claim 7, wherein the lubricant is sprayed on in the form of a foam.