Pengaruh Penggunaan Surfaktan Cetyl Trimethyl Ammonium Bromide dan Persentase Partikel pada Nanofluida Berbasis Limbah Printed Circuit Board Sebagai Media Quench Terhadap Kekerasan dan Mikrostruktur yang Terbentuk pada Baja AISI 4140 = The Effect of Using Cetyl Trimethyl Ammonium Bromide Surfactant and Particle Percentage in Nanofluids Based on E-waste Printed Circuit Board as Quench Media on Hardness and Microstructures Formed in AISI 4140 Steel

Pengaruh Penambahan Surfaktan Amfoterik dan Partikel Non Logam dari Limbah Printed Circuit Board (PCB) terhadap Kestabilan, Konduktivitas Termal, dan Viskositas Termal Fluids sebagai Media Quenching = The Influence of Adding Amphoteric Surfactant and Non-Metallic Particles from Printed Circuit Board (PCB) Waste on the Stability, Thermal Conductivity, and Thermal Fluids Viscosity as Quenching Media

Pengaruh Persentase Surfaktan Polyethylene Glycol (PEG) dan Persentase Partikel Logam Printed Circuit Board (PCB) Terhadap Zeta Potensial, Konduktivitas Termal, dan Viskositas Thermal Fluids Sebagai Media Pendingin Perlakuan Panas = The Effect of Polyethylene Glycol (PEG) Surfactant Percentage and Metallic Particle Percentage o Printed Circuit Board (PCB) Waste on Zeta Potential, Thermal Conductivity, and Viscosity of Thermal Fluids as Heat Treatment Coolants

Studi Optimalisasi Persentase Surfaktan Cetyltrimethylammonium Bromida (CTAB) dan Partikel Non-Logam Limbah Printed Circuit Board (PCB) Terhadap Konduktivitas Termal, Viskositas, dan Zeta Potensial Thermal Fluid = Optimalization Study of Cetyltrimethylammonium Bromide (CTAB) Surfactant and Printed Circuit Boards (PCB) Non-Metallic Particles Percentage on Thermal Conductivity, Viscosity, and Zeta Potential of Thermal Fluid

Karakterisasi Baja JIS S45C yang di Quench dalam HTF Suspensi Partikel Hasil Pengolahan Fraksi Non-Logam PCB Dengan Penstabil CAPB = Characterization of JIS S45C Steel Quenched in HTF based on Suspension of Particles from Processing of Non-metallic Fraction of PCB with the addition of CAPB as Stabilizer