ASTM D6557 Standard Test Method for Evaluation of Rust Preventive Characteristics of Automotive Engine Oils
6. Apparatus
6.1 Specimen Preparation System - Obtain the specimens from the Central Parts Distributor (CPD).
6.1.1 Specimen preparation equipment includes various common laboratory apparatus and an ultrasonic cleaning bath.
6.2 Air Supply System - A compressed air supply is required, with two air filters, two pressure regulators, a gas purifier, a gassing manifold (25 port outlet), TFE-fluorocarbon tubing (25 lengths, each 183 m) or equivalent multiport flow control system, and a calibrated flowmeter (see Annex A1 and Figs. 1 and 2).
6.3 Acid Solution Delivery System - An acid solution delivery system that includes a multiple syringe pump with a ten position rack is required. The flow rate range minimum, using a 0.5 µL syringe, is 0.0001 µL/h. The flow rate maximum, using a 140 mL syringe, is 220.82 mL/min (see Figs. 3 and 4).
6.4 Test Tube Assembly - The test tube assembly consists of 24 disposable plastic syringes and other common laboratory apparatus.
6.5 Temperature and Shaking Speed Control System - A mechanical shaker, Bench-Top Environ Shaker Model 4628, provides an orbital shaking motion in a controlled speed and temperature environment.
6.5.1 A special test tube assembly rack (see Figs. 5 and 6) has 24 tube positions and is attached to the shaker platform (457 by 457) mm.
6.6 Air Delivery Manifold, required.
6.7 Venting System - Common laboratory apparatus is employed for the required venting system (see Fig. 7).
6.8 Image Analysis System - A specific imaging analysis system is required. This system is composed of:
6.8.1 Optics and Illumination:
6.8.1.1 Nikon Epiphot 200 inverted metallurgical microscope,
6.8.1.2 BZ binocular head,
6.8.1.3 RV 3 plate mechanical stage,
6.8.1.4 CFWN 10x wide field eyepiece, high point eyepiece,
6.8.1.5 Manual BD 5 place nosepiece,
6.8.1.6 Epiphot 300 EB block,
6.8.1.7 DF module,
6.8.1.8 CF BD plan 5x/0.13 plan achromat objective,
6.8.1.9 CF BD plan 10x/0.13 plan achromat objective,
6.8.1.10 EPI polarizer,
6.8.1.11 Analyzer,
6.8.1.12 Lamphouse for 12 V/100 W quartz halogen light source,
6.8.1.13 Lamphouse adapter,
6.8.1.14 12 V/100 W halogen bulbs,
6.8.1.15 300/200 100 W power supply,
6.8.1.16 Remote control cable,
6.8.1.17 C-mount coupler for video camera,
6.8.1.18 NCB 11 filter,
6.8.1.19 Power cords, and
6.8.1.20 Ultracentrifuge tube spacer with a 5 mm hole drilled in the center (used as a sample holder and sample randomizer for sample orientation).
6.8.2 Image Capture Hardware and Software:
6.8.2.1 Research grade, high resolution, NTSC RGB/RS-170 camera system,
6.8.2.2 Research grade, high resolution, NTSC RGB/RS-170 frame grabber,
6.8.2.3 The host computer system (shall meet or exceed the following specifications):
(1) Hardware - Pentium 133 MHz CPU, 16 MB RAM, 540 MB hard drive, 1.44 MB 90 mm floppy, 1.44 MB 130 mm floppy (optional), CD-ROM (highly recommended option), 101 or Windows 95 keyboard, SVGA local bus video card with 2 MB RAM (4 MB recommended), 2 button serial mouse with pad, 2 parallel ports, and 2 serial ports.
(2) Software - Windows 3.x/DOS 6.22 or Windows 95 Operating System, Microsoft Excel 7.0 (Microsoft Office 97 recommended).
(3) Monitor - Medical grade high-resolution 485 mm NTSC RGB color video monitor, all necessary cables, connectors, and adapters (including a surge and spike suppressing power strip).
6.8.3 BRT Image Analysis Software:
6.8.3.1 BRT macro program, and
6.8.3.2 Optimate image analysis engine.
7. Reagents and Materials
7.1 Reagents:
7.1.1 Acid Solution (Warning - Corrosive. Combustible. Health hazard) - Obtain the acid solution from the CPD.
NOTE 1 - For information only. Appendix X1 contains details of the acid solution.
7.1.2 Acetone, 99.5 %. (Warning - Flammable. Health hazard.)
7.1.3 n-Heptane, (38 to 42) % (purity), commercial grade, with C7 isomers. (Warning - Flammable. Health hazard.)
7.2 Materials:
7.2.1 TFE-fluorocarbon FEP Tubing, inside diameter (I.D.) 0.8 mm, outside diameter (O.D.) 1.6 mm, 17 rolls, each roll 305 m. (Not required if the optional NRS flow controller is used.)
7.2.2 Vinyl Tubing, about 4.6 m in length with an (I.D.)
3.2 mm and an (O.D.) 6.4 mm.
7.2.3 Miscellaneous Common Laboratory Equipment, including glassware, tubing fittings, trays, vials, and plastic syringes.
