SU285437A1 - - Google Patents
Info
- Publication number
- SU285437A1 SU285437A1 SU1358242A SU1358242A SU285437A1 SU 285437 A1 SU285437 A1 SU 285437A1 SU 1358242 A SU1358242 A SU 1358242A SU 1358242 A SU1358242 A SU 1358242A SU 285437 A1 SU285437 A1 SU 285437A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- rhodium
- electrolyte
- current density
- salt
- sulfamic acid
- Prior art date
Links
- 239000003792 electrolyte Substances 0.000 description 6
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 4
- 229910052703 rhodium Inorganic materials 0.000 description 4
- 239000010948 rhodium Substances 0.000 description 4
- VBIXEXWLHSRNKB-UHFFFAOYSA-N Ammonium oxalate Chemical compound [NH4+].[NH4+].[O-]C(=O)C([O-])=O VBIXEXWLHSRNKB-UHFFFAOYSA-N 0.000 description 3
- IIACRCGMVDHOTQ-UHFFFAOYSA-N Sulfamic acid Chemical compound NS(O)(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 2
- 150000003283 rhodium Chemical class 0.000 description 2
- SONJTKJMTWTJCT-UHFFFAOYSA-K Rhodium(III) chloride Chemical compound [Cl-].[Cl-].[Cl-].[Rh+3] SONJTKJMTWTJCT-UHFFFAOYSA-K 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Description
Известный способ электролитического осаждени роди из электролита, .содержащего соль роди и Сульфаминовую кислоту, харЭКтеризуетс тем, что осадки роди имеют матовую поверхность. Предлагаемый способ отличаетс тем, что с целью у.тучшени .качестВа .покрыти в электролит 1ВВО.ДЯТ оксалат аадмони .при следующем соотношении компонентов, г/л: соль роди (в пересчете на металл) оксалат аммони 5-35 сульфаминова кислота7-15 и ;П1р.оцесс ведут при 40-80°С, плотности тока 2-JlO а1дм. В качестве исходных продуктов примен ют треххлористый родий, оксалат аммони и сульфамино;вую .кислоту. Так, натри/мер, из электролита, содержащего , г л: соль роди (В пересчете на металл) 15 оксалат аммони 23 . сульфаминовую кислоту . при рН 3, темлературе электролита , (ПЛОТНОСТИ тока 4 а/дм осаж.дают покрытие родием толщиной до 13 мк. Осадок (роди получаетс светлый, слегка с голубоватым оттен .ком и металлическим блеском, микротвердостью 740 кг/мм. Предмет изобретени Опособ электролитического осаждени роди из электролита, содержащего соль роди , сульфа.ми-новую кислоту, отличающийс тем, что, с .целью улучшени качества покрыти , в электролит ввод т Огксалат аммони при следующем соотнощении компонентов, г/л: соль роди (в пересчете на металл) оксалат аммони 5-35 сульфаминова кислота7-15 и прОцесс ведут при 40-80°С, плотности тока 2-10 а/дм.The known method of electrolytic precipitation of rhodium from an electrolyte containing rhodium salt and sulfamic acid is characterized by the fact that the precipitates of rhodium have a matte surface. The proposed method differs in that with the aim of quenching a qualifier. Coating electrolyte 1BOW. ; P1r.otsess lead at 40-80 ° C, current density of 2-JlO a1 dm. Rhodium trichloride, ammonium oxalate and sulfamic acid are used as starting materials. So, sodium / mer, from an electrolyte containing, g l: salt of rhodium (In terms of metal) 15 ammonium oxalate 23. sulfamic acid. at pH 3, electrolyte temperature, (current density 4 a / dm precipitated up to 13 microns thick coating. Sediment (it is light, slightly bluish tint and metallic luster, microhardness 740 kg / mm). precipitation of rhodium from an electrolyte containing rhodium salt, sulfa-mi-new acid, characterized in that, in order to improve the quality of the coating, Oxyalat ammonium is introduced into the electrolyte at the following ratio of components ammonium oxalate 5-35 sulpham kislota7-15 and novel process is carried out at 40-80 ° C, current density of 2-10 A / dm.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU285437A1 true SU285437A1 (en) |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4416742A (en) * | 1980-09-25 | 1983-11-22 | Nippon Mining Co., Ltd. | Process and electrolytic bath for making a rhodium-plated article having a black or blue color |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4416742A (en) * | 1980-09-25 | 1983-11-22 | Nippon Mining Co., Ltd. | Process and electrolytic bath for making a rhodium-plated article having a black or blue color |
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