公开(公告)号：US5035781A

公开(公告)日：1991-07-30

申请号：US528664

申请日：1990-05-24

申请人： Jurgen Schmidt ,  Thomas Furche ,  Roland Erdmann ,  Marion Reichert ,  Ullrich Bayer ,  Peter Kurze ,  Thomas Schwarz ,  Joachim Schreckenbach ,  Hans-Jurgen Kletke ,  Andreas Hoffmann ,  Martin Heppner ,  Anja Hasse ,  Dorith Schmidt ,  Annette Klaus

发明人： Jurgen Schmidt ,  Thomas Furche ,  Roland Erdmann ,  Marion Reichert ,  Ullrich Bayer ,  Peter Kurze ,  Thomas Schwarz ,  Joachim Schreckenbach ,  Hans-Jurgen Kletke ,  Andreas Hoffmann ,  Martin Heppner ,  Anja Hasse ,  Dorith Schmidt ,  Annette Klaus

IPC分类号： C25D11/02 ,  C25D11/26

CPC分类号： C25D11/26 ,  C25D11/026 ,  Y10T428/12806 ,  Y10T428/12812

摘要： The invention relates to a cyanide-free electrolyte being harmless to the environment and to health which makes feasible the production of black surface layers on light metals or on alloys of the latter, preferably titanium, remaining deeply-black and adhesive even after extreme changes in the ambient temperature and having nearly equal values of the optical absorptivity of radiation and of the thermal emission capability (the .alpha./.epsilon.-ratio is about 0.95) by means of the anodic oxidation by spark discharge (ANOF-method). These layers are absolutely X-amorphous and show, hence, an ideal optically isotropic behavior regarding the reflection of radiation. Due to their minimum evolution of gases they offer a high thermovacuum stability. The electrolyte consists of an ammoniacal solution of K.sub.2 H.sub.2 PO.sub.4 potssium dihydrogenphosphate and K.sub.2 CRO.sub.4 potassium chromate. The homogeneity of the optically black layers is ensured by not using fluoride ions and employing acetate ions. Such layers comprise titanium, chromium and copper following ratios of CR:Ti=1:(1.9 to 2.2) and CR:Cu=1:(0.8 to 1.3).

摘要翻译： 本发明涉及一种对无环境和健康无害的电解质，这使得在轻金属或后者的合金（优选钛）上生产黑色表面层是可行的，即使在极端变化之后仍然保持深黑色和粘合 通过火花放电的阳极氧化（ANOF方法），具有几乎相同的辐射光吸收率和热发射能力（α/ε-比率约为0.95）的值。 这些层是绝对X非晶体的，因此显示关于辐射反射的理想光学各向同性行为。 由于它们气体的最小演变，它们提供了高的热真空稳定性。 电解质由K2H2PO4磷酸二氢钾和K2CRO4铬酸钾的氨溶液组成。 通过不使用氟离子并使用乙酸根离子来确保光学黑层的均匀性。 CR：Ti = 1：（1.9〜2.2）和CR:Cu = 1：（0.8〜1.3）的比例，这些层包含钛，铬和铜。

公开(公告)号：US5075178A

公开(公告)日：1991-12-24

申请号：US638288

申请日：1990-01-07

申请人： Juergen Schmidt ,  Thomas Furche ,  Roland Erdmann ,  Marion Reichert ,  Bayer Ullrich ,  Peter Kurze ,  Thomas Schwarz ,  Joachim Schreckenbach ,  Hans-Juergen Kletke ,  Andreas Hofmann ,  Martin Heppner ,  Anja Hasse ,  Dorith Schmidt ,  Annette Klaus

发明人： Juergen Schmidt ,  Thomas Furche ,  Roland Erdmann ,  Marion Reichert ,  Bayer Ullrich ,  Peter Kurze ,  Thomas Schwarz ,  Joachim Schreckenbach ,  Hans-Juergen Kletke ,  Andreas Hofmann ,  Martin Heppner ,  Anja Hasse ,  Dorith Schmidt ,  Annette Klaus

IPC分类号： C25D11/02 ,  C25D11/26

CPC分类号： C25D11/26 ,  C25D11/026 ,  Y10T428/12806 ,  Y10T428/12812

摘要： The invention relates to a cyanide-free electrolyte being harmless to the environment and to health which makes feasible the production of black surface layers on light metals or on alloys of the latter, preferably titanium, remaining deeply-black and adhesive even after extreme changes in the ambient temperature and having nearly equal values of the optical absorptivity of radiation and of the thermal emission capability (the .alpha./.epsilon.-ratio is about 0.95) by means of the anodic oxidation by spark discharge (ANDF-method). These layers are absolutely X-amorphous and show, hence, an ideal optically isotropic behavior regarding the reflection of radiation. Due to their minmum evolution of gases they offer a high thermovacuum stability. The electrolyte consists of an ammoniacal solution of K.sub.2 H.sub.2 PO.sub.4 potassium dihydrogenphosphate and K.sub.2 CrO.sub.4 potassium chromate. The homogeneity of the optically black layers is ensured by not using fluoride ions and employing acetate ions. Such layers comprise titanium, chromium and copper in ratios of Cr:Ti=1: (1.9 to 2.2) and Cr:Cu=1:(0.8 to 1.3).