Corrosion resistance consolidation of a diaphragm type vacuum sensor
This paper describes the corrosion resistance consolidation of a diaphragm type vacuum sensor using a high corrosion resistance material. Initially, we had fabricated a vacuum sensor using a Ru based thin film amorphous alloy, whose high corrosion resistance was confirmed in wet tests. In the high corrosion gas tests, however, the sensor resists NF<inf>3</inf> and COF<inf>2</inf> gases but does not resist ClF<inf>3</inf> gas. Therefore, we searched for new Ni based amorphous alloys which can also resist ClF<inf>3</inf> using a combinatorial search based on a MEMS process. We were able to fabricate new sensors using Ni<inf>56</inf>Nb<inf>33</inf>Ti<inf>11</inf> and Ni<inf>49</inf>Nb<inf>35</inf>Ti<inf>16</inf> amorphous alloys which were shown to resist all three mentioned gases.
Effect of SiC size dimensions on the corrosion wear resistance of the electrodeposited composite coating
Advances in materials' performance often require the development of composite systems, of which coated materials are one form. The abrasion and corrosion resistance of components can be greatly increased by protective coatings and this is a growing industry of considerable economic importance. This paper aims with a comparative wear corrosion study of pure nickel and Ni-SiC nano structured composite coating. All the experiments concerning the effects of the rotation speed and the applied load on the corrosion behaviour and friction coefficient were carried out using the 0.5 M Na2SO4 neutral solution. The Ecorr values measured at different disc rotation speeds and different friction loads show some differences between the two types of coatings. For wear corrosion tests an apparatus constructed in the Electrochemistry Laboratory, Dept. of Materials Engineering of Trento University was used. A PMMA cell contained the test solution and a transmission shaft with the tested sample, in the shape of a disc (diameter 40 mm and height 18 mm), connected to an electrical motor. A moving rod held an alumina parallelepiped counterface and the imposing load system thus obtaining a sliding type wear system. 
 
 
 
Einfluss der SiC-Abmessungen auf den Korrosionsverschleiswiderstand von elektrolytisch abgeschiedenen Verbundbeschichtungen 
 
 
 
Fortschritte im Werkstoffverhalten erfordern haufig die Entwicklung von Verbundsystemen; beschichtete Werkstoffe sind ein Beispiel hierfur. Der Verschleis- und Korrosionswiderstand von Komponenten kann durch schutzende Beschichtungen erheblich verbessert werden und dies ist ein wachsender Industriezweig mit nennenswerter wirtschaftlicher Bedeutung. Ziel dieser Arbeit ist eine vergleichende Verschleis-Korrosions-Studie von reinen Nickel- und nanostrukturierten Ni-SiC Verbundbeschichtungen. Alle Versuche bezuglich des Einflusses der Drehzahl und der aufgebrachten Belastung auf das Korrosionsverhalten und den Reibungskoeffizienten wurden in neutraler 0,5 M Na2SO4 Losung durchgefuhrt. Die bei verschiedenen Drehzahlen und verschiedenen Reibungsbelastungen gemessenen Ecorr-Werte zeigen einige Unterschiede fur die zwei Beschichtungstypen. Fur die Verschleis-Korrosions-Versuche wurde eine im elektrochemischen Labor der Abteilung fur Werkstoffwissenschaften der Universitat in Trento konstruierte Apparatur eingesetzt. Eine PMMA-Zelle enthielt die Versuchslosung und eine Transmissionswelle mit der Versuchsprobe in der Form einer Scheibe (Durchmesser 40 mm und Hohe 18 mm), die an einen elektrischen Motor angeschlossen war. Ein sich bewegener Stab hielt das Gegenstuck aus Aluminiumoxid und das Belastungssystems, wodurch ein Gleitverschleissystem erreicht wurde.
Adolescent and Young Adult Testicular Germ Cell Tumors: Special Considerations
While testicular germ cell tumors (T-GCTs) make up only 0.5% of pediatric malignancies and less than 2% of adult malignancies, they comprise 14% of adolescent malignancies, making it the most common solid tumor in this age group. The transition in incidence at this age is also accompanied by a transition in tumor histology with adolescents having mostly pure embryonal carcinoma and mixed nonseminomatous germ cell tumors. Similar to T-GCTs of all ages, surgical excision with orchiectomy is the standard initial step in treatment. Chemotherapy, retroperitoneal lymph node dissection, and targeted treatment of distant metastases make even widely disseminated disease treatable and curable. For this reason, in many ways, the future focus has expanded beyond survival alone to emphasize quality of life issues such as fertility and hypogonadism. However, adolescents remain the age group least studied or understood as they fall in between the ages included in most study designs. Also, they require the most psychosocial support because of the challenges unique to the adolescent period. In this review, we aim to highlight the known outcome data for T-GCTs in this population and also to discuss the unique aspects of treatment and support for this age group.